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      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 30, 2001



                                                      REGISTRATION NO. 333-57416

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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                            ------------------------


                               AMENDMENT NO. 1 TO

                                    FORM S-4
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                            ------------------------

                     ISSUER OF SECURITIES REGISTERED HEREBY

                          THE WILLIAMS COMPANIES, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


                                                          
           DELAWARE                          4922                         73-0569878
(STATE OR OTHER JURISDICTION OF  (PRIMARY STANDARD INDUSTRIAL          (I.R.S. EMPLOYER
INCORPORATION OR ORGANIZATION)    CLASSIFICATION CODE NUMBER)       IDENTIFICATION NUMBER)



                                            
                                                            WILLIAM G. VON GLAHN
             ONE WILLIAMS CENTER                            ONE WILLIAMS CENTER
            TULSA, OKLAHOMA 74172                          TULSA, OKLAHOMA 74172
                (918) 573-2000                                 (918) 573-2000
 (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
              NUMBER, INCLUDING                   (NAME, ADDRESS, INCLUDING ZIP CODE, AND
AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE               TELEPHONE NUMBER,
                   OFFICES)                      INCLUDING AREA CODE, OF AGENT FOR SERVICE)


                                   COPIES TO:

                               WILLIAM MARK YOUNG
                             ANDREWS & KURTH L.L.P.
                             600 TRAVIS, SUITE 4200
                              HOUSTON, TEXAS 77002
                                 (713) 220-4323
                              (713) 238-7111 (FAX)

     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES TO THE
PUBLIC: As soon as practicable following the effectiveness of this Registration
Statement.

     If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box.  [ ]

     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier
registration statement for the same offering.  [ ]
---------------


     If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier registration statement for the same
offering.  [ ]


---------------


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                          The Williams Companies, Inc.
                               Offer to Exchange

                7.50% Debentures due January 15, 2031, Series A,
           that have been registered under the Securities Act of 1933

                          for any and all outstanding

                     7.50% Debentures due January 15, 2031

                                      and

                6.75% Putable Asset Term Securities (PATS(SM)),
                  Putable/Callable January 15, 2006, Series A,
           that have been registered under the Securities Act of 1933

                          for any and all outstanding

                  6.75% Putable Asset Term Securities (PATS),
                       Putable/Callable January 15, 2006
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THE NEW DEBENTURES AND THE NEW PATS:

-  The new debentures will be freely tradeable and otherwise substantially
   identical to the outstanding debentures, including maturity, interest rate
   and payment terms, redemption and ranking.

-  The new PATS will be freely tradeable and otherwise substantially identical
   to the outstanding PATS, including maturity, interest rate and payment terms,
   redemption, ranking, and put and call provisions.

THE EXCHANGE OFFER:


-  Expiration:  5:00 p.m., New York City time, on June 27, 2001, unless we
   extend the expiration date.


-  Conditions:  The exchange offer is not conditioned upon any aggregate
   principal amount of outstanding debentures or PATS being tendered.

-  Tendered Securities:  All outstanding debentures and outstanding PATS that
   are validly tendered and not validly withdrawn will be exchanged for an equal
   principal amount of new debentures or new PATS that are registered under the
   Securities Act of 1933. If you fail to tender your outstanding debentures or
   outstanding PATS, you will continue to hold unregistered securities, and your
   ability to transfer them could be adversely affected.

-  Withdrawal:  Tenders of outstanding debentures or outstanding PATS may be
   withdrawn at any time prior to the expiration of the exchange offer, unless
   we have already accepted your outstanding debentures or outstanding PATS for
   exchange.

-  Tax Consequences:  The exchange of outstanding debentures or PATS for new
   debentures or new PATS, respectively, will not be a taxable event for U.S.
   federal income tax purposes.

TRADING FORMAT

-  Neither the new debentures nor the new PATS will be listed on any securities
   exchange.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE
ADEQUACY OR ACCURACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.


                  The date of this prospectus is May 30, 2001

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The information contained in this prospectus was obtained from us and other
sources believed by us to be reliable. This prospectus also incorporates
important business and financial information about us that is not included in or
delivered with this prospectus.

You should rely only on the information contained in this prospectus or any
supplement and any information incorporated by reference in this prospectus or
any supplement. We have not authorized anyone to provide you with any
information that is different. If you receive any unauthorized information, you
must not rely on it. You should disregard anything we said in an earlier
document that is inconsistent with what is in or incorporated by reference in
this prospectus.

You should not assume that the information in this prospectus or any supplement
is current as of any date other than the date on the front page of this
prospectus. This prospectus is not an offer to sell nor is it seeking an offer
to buy these securities in any state or jurisdiction where the offer or sale is
not permitted.

We include cross references in the prospectus to captions in these materials
where you can find further related discussions. The following table of contents
tells you where to find these captions.

TABLE OF CONTENTS
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                                        PAGE
                                        NO.
                                        ----
                                     
Prospectus Summary....................    3
Risk Factors..........................   13
Use Of Proceeds.......................   14
The Exchange Offer....................   15
Description Of The New Securities.....   25
United States Federal Tax
  Considerations......................   44





                                        PAGE
                                        NO.
                                        ----
                                     
Plan Of Distribution..................   47
Forward-Looking Statements............   48
Legal Matters.........................   49
Experts...............................   49
Where You Can Find More Information...   50
Incorporation Of Documents By
  Reference...........................   50



                            ------------------------

NOTICE TO NEW HAMPSHIRE RESIDENTS
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NEITHER THE FACT THAT A REGISTRATION STATEMENT OR AN APPLICATION FOR A LICENSE
HAS BEEN FILED UNDER CHAPTER 421-B OF THE NEW HAMPSHIRE REVISED STATUTES
ANNOTATED, 1955, AS AMENDED (RSA), WITH THE STATE OF NEW HAMPSHIRE NOR THE FACT
THAT A SECURITY IS EFFECTIVELY REGISTERED OR A PERSON IS LICENSED IN THE STATE
OF NEW HAMPSHIRE CONSTITUTES A FINDING BY THE SECRETARY OF STATE THAT ANY
DOCUMENT FILED UNDER RSA 421-B IS TRUE, COMPLETE AND NOT MISLEADING. NEITHER ANY
SUCH FACT NOR THE FACT THAT AN EXEMPTION OR EXCEPTION IS AVAILABLE FOR A
SECURITY OR A TRANSACTION MEANS THAT THE SECRETARY OF STATE HAS PASSED IN ANY
WAY UPON THE MERITS OR QUALIFICATION OF, OR RECOMMENDED OR GIVEN APPROVAL TO,
ANY PERSON, SECURITY OR TRANSACTION. IT IS UNLAWFUL TO MAKE, OR CAUSE TO BE
MADE, TO ANY PROSPECTIVE PURCHASER, CUSTOMER OR CLIENT ANY REPRESENTATION
INCONSISTENT WITH THE PROVISIONS OF THIS PARAGRAPH.
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PROSPECTUS SUMMARY

THIS SUMMARY HIGHLIGHTS SELECTED INFORMATION FROM THIS PROSPECTUS TO HELP YOU
UNDERSTAND OUR BUSINESS, THE NEW DEBENTURES AND NEW PATS. IT LIKELY DOES NOT
CONTAIN ALL THE INFORMATION THAT IS IMPORTANT TO YOU OR THAT YOU SHOULD CONSIDER
IN MAKING AN INVESTMENT DECISION. TO UNDERSTAND ALL OF THE TERMS OF THE EXCHANGE
OFFER AND TO ATTAIN A MORE COMPLETE UNDERSTANDING OF OUR BUSINESS AND FINANCIAL
SITUATION, YOU SHOULD READ CAREFULLY THIS ENTIRE PROSPECTUS AND SHOULD CONSIDER
CONSULTING WITH YOUR OWN LEGAL AND TAX ADVISORS. REFERENCES IN THIS PROSPECTUS
TO "WE," "US" OR "OUR" REFER TO THE WILLIAMS COMPANIES, INC.

THE WILLIAMS COMPANIES, INC.

We are a holding company headquartered in Tulsa, Oklahoma. We were originally
incorporated under the laws of the State of Nevada in 1949 and were
reincorporated under the laws of the State of Delaware in 1987. We maintain our
principal executive offices at One Williams Center, Tulsa, Oklahoma 74172,
telephone (918) 573-2000.

Williams, through Williams Gas Pipeline Company, LLC and Williams Energy
Services, LLC and their subsidiaries, engages in the following types of
energy-related activities:

  - transportation and storage of natural gas and related activities through
    operation and ownership of five wholly owned interstate natural gas
    pipelines and several pipeline joint ventures;

  - exploration and production of oil and gas through ownership of 1.2 trillion
    cubic feet equivalent of proved natural gas reserves primarily located in
    Colorado, New Mexico and Wyoming;

  - natural gas gathering, processing and treating activities through ownership
    and operation of approximately 11,300 miles of gathering lines, 11 natural
    gas treating plants and 17 natural gas processing plants (three of which are
    partially owned) located in the United States and Canada;

  - natural gas liquids transportation through ownership and operation of
    approximately 14,300 miles of natural gas liquids pipeline (4,568 miles of
    which are partially owned);

  - transportation of petroleum products and related terminal services through
    ownership or operation of approximately 9,170 miles of petroleum products
    pipeline and 78 petroleum products terminals (some of which are partially
    owned);

  - light hydrocarbon/olefin transportation through 300 miles of pipeline in
    southern Louisiana;

  - ethylene production through a 5/12 interest in a 1.2 billion pound per year
    facility in Geismar, Louisiana;

  - production and marketing of ethanol and bio-products through operation and
    ownership of two ethanol plants (one of which is partially owned) and
    ownership of minority interests or investments in four other plants;

  - refining of petroleum products through operation and ownership of two
    refineries;


  - retail marketing through convenience stores (most of which are intended to
    be sold in 2001) and travel centers; and


  - energy commodity marketing and trading.

Williams, through subsidiaries, also directly invests in energy projects
primarily in South America, Lithuania and Canada and continues to explore and
develop additional projects for international investments. It also invests in
energy and infrastructure development funds in Asia and Latin America.

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Substantially all operations of Williams are conducted through subsidiaries.
Williams performs certain management, legal, financial, tax, consultative,
administrative and other services for its subsidiaries and at December 31, 2000,
employed approximately 1,470 employees. Williams' principal sources of cash are
from external financings, dividends and advances from its subsidiaries,
investments, payments by subsidiaries for services rendered and interest
payments from subsidiaries on cash advances. The amount of dividends available
to Williams from subsidiaries largely depends upon each subsidiary's earnings
and operating capital requirements. The terms of certain subsidiaries' borrowing
arrangements limit the transfer of funds to Williams.



To achieve organizational and operating efficiencies, Williams' interstate
natural gas pipelines and pipeline joint venture investments are grouped
together under its wholly owned subsidiary, Williams Gas Pipeline Company, LLC.
The other energy operations are primarily grouped into a wholly owned
subsidiary, Williams Energy Services, LLC. The international energy operations
are grouped into a wholly owned subsidiary, Williams International Company.


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SUMMARY OF THE EXCHANGE OFFER

You are entitled to exchange in the exchange offer your outstanding debentures
for new debentures with substantially identical terms, and your outstanding PATS
for new PATS with substantially identical terms. You should read the discussion
under the heading "Description of the New Securities" beginning on page 25 for
further information regarding the new debentures and the new PATS.

We summarize the terms of the exchange offer below. You should read the
discussion under the heading "The Exchange Offer" beginning on page 15 for
further information regarding the exchange offer and resale of the new
debentures and the new PATS.

Securities to be Exchanged..........     On January 17, 2001, we issued $200.0
                                         million aggregate principal amount of
                                         outstanding 7.50% Debentures due
                                         January 15, 2031 to initial purchasers
                                         in transactions exempt from the
                                         registration requirements of the
                                         Securities Act. On that same date, we
                                         issued $500.0 million aggregate
                                         principal amount of outstanding 7.50%
                                         Debentures due January 15, 2031 to UBS
                                         AG, London Branch, an affiliate of UBS
                                         Warburg LLC, in a transaction exempt
                                         from the registration requirements of
                                         the Securities Act. UBS AG, London
                                         Branch, in turn sold those debentures
                                         to the initial purchasers who purchased
                                         the $200.0 million of debentures from
                                         us. Also on January 17, 2001, we issued
                                         $400.0 million aggregate principal
                                         amount of outstanding 6.75% Putable
                                         Asset Term Securities (PATS) Putable/
                                         Callable January 15, 2006, to initial
                                         purchasers in transactions exempt from
                                         the registration requirements of the
                                         Securities Act.

                                         The terms of the new debentures and the
                                         outstanding debentures are
                                         substantially the same in all material
                                         respects, except that (1) the new
                                         debentures will be freely transferable
                                         by the holders except as otherwise
                                         provided in this prospectus; (2)
                                         holders of new debentures will have no
                                         registration rights; and (3) the new
                                         debentures will contain no provisions
                                         for an increase in their stated
                                         interest rate.

                                         The terms of the new PATS and the
                                         outstanding PATS are substantially the
                                         same in all material respects, except
                                         that (1) the new PATS will be freely
                                         transferable by the holders except as
                                         otherwise provided in this prospectus;
                                         (2) holders of new PATS will have no
                                         registration rights; and (3) the new
                                         PATS will contain no provisions for an
                                         increase in their stated interest rate.

The Exchange Offer..................     We are offering to exchange up to
                                         $700.0 million aggregate principal
                                         amount of new debentures for up to
                                         $700.0 million aggregate principal
                                         amount of

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                                         outstanding debentures. We are offering
                                         to exchange up to $400.0 million
                                         aggregate principal amount of new PATS
                                         for up to $400.0 million aggregate
                                         principal amount of outstanding PATS.
                                         Outstanding debentures and outstanding
                                         PATS may be exchanged only in integral
                                         multiples of $1,000. The new debentures
                                         will evidence the same debt as the
                                         outstanding debentures, and the new
                                         debentures will be governed by the same
                                         indenture as the outstanding
                                         debentures. The new PATS will evidence
                                         the same debt as the outstanding PATS,
                                         and the new PATS will be governed by
                                         the same indenture as the outstanding
                                         PATS.

Resale..............................     We believe that the new debentures and
                                         the new PATS issued in the exchange
                                         offer may be offered for resale, resold
                                         and otherwise transferred by you
                                         without compliance with the
                                         registration and prospectus delivery
                                         provisions of the Securities Act,
                                         provided that:
                                         -  the new debentures and the new PATS
                                            are being acquired in the ordinary
                                            course of your business;
                                         -  you are not participating, do not
                                            intend to participate, and have no
                                            arrangement or understanding with
                                            any person to participate, in the
                                            distribution of the new debentures
                                            and the new PATS issued to you in
                                            the exchange offer; and
                                         -  you are not an "affiliate" of ours.

                                         If any of these conditions are not
                                         satisfied and you transfer any new
                                         debentures or new PATS issued to you in
                                         the exchange offer without delivering a
                                         prospectus meeting the requirements of
                                         the Securities Act or without an
                                         exemption from registration of your new
                                         debentures or new PATS from such
                                         requirements, you may incur liability
                                         under the Securities Act. We do not
                                         assume or indemnify you against any
                                         such liability.

                                         Each broker-dealer that is issued new
                                         debentures or new PATS in the exchange
                                         offer for its own account in exchange
                                         for outstanding debentures or
                                         outstanding PATS which were acquired by
                                         such broker-dealer as a result of
                                         market-making or other trading
                                         activities must acknowledge that it
                                         will deliver a prospectus meeting the
                                         requirements of the Securities Act in
                                         connection with any resale of the new
                                         debentures or new PATS. A broker-dealer
                                         may use this prospectus for an offer to
                                         resell, resale or other retransfer of
                                         the new debentures or new PATS issued
                                         to it in the exchange offer.

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Record Date.........................     We mailed this prospectus and the
                                         related exchange offer documents to
                                         registered holders of outstanding
                                         debentures and the outstanding PATS on
                                         May 30, 2001.



Expiration Date.....................     The exchange offer will expire at 5:00
                                         p.m., New York City time, on June 27,
                                         2001, or such later date and time to
                                         which we extend it.


Withdrawal of Tenders...............     You may withdraw your tender of
                                         outstanding debentures or outstanding
                                         PATS at any time prior to 5:00 p.m.,
                                         New York City time, on the expiration
                                         date. To withdraw, the exchange agent
                                         must receive a notice of withdrawal at
                                         its address indicated under "The
                                         Exchange Offer--Exchange Agent" before
                                         5:00 p.m., New York City time, on the
                                         expiration date. We will return to you,
                                         without charge, promptly after the
                                         expiration or termination of the
                                         exchange offer any outstanding
                                         debentures or outstanding PATS that you
                                         tendered but that were not accepted for
                                         exchange.

Conditions to the Exchange Offer....     We will not be required to accept
                                         outstanding debentures or outstanding
                                         PATS for exchange if the exchange offer
                                         would violate applicable law or if any
                                         legal action has been instituted or
                                         threatened that would impair our
                                         ability to proceed with the exchange
                                         offer. The exchange offer is not
                                         conditioned upon any minimum aggregate
                                         principal amount of outstanding
                                         debentures or outstanding PATS being
                                         tendered. Please read the section "The
                                         Exchange Offer--Conditions to the
                                         Exchange Offer" on page 22 for more
                                         information regarding the conditions to
                                         the exchange offer.

Procedures for Tendering Outstanding
  Securities........................     If your outstanding debentures or
                                         outstanding PATS are held through The
                                         Depository Trust Company and you wish
                                         to participate in the exchange offer,
                                         you may do so through the automated
                                         tender offer program of DTC. By
                                         participating in the exchange offer,
                                         you will agree to be bound by the
                                         letter of transmittal that we are
                                         providing with this prospectus as
                                         though you had signed the letter of
                                         transmittal. By signing or agreeing to
                                         be bound by the letter of transmittal,
                                         you will represent to us that, among
                                         other things:

                                         -  any new debentures and new PATS that
                                            you receive will be acquired in the
                                            ordinary course of your business;

                                         -  you have no arrangement or
                                            understanding with any person or
                                            entity to participate in the

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                                            distribution of the new debentures
                                            or the new PATS;

                                         -  if you are not a broker-dealer, you
                                            are not engaged in and do not intend
                                            to engage in the distribution of the
                                            new debentures or the new PATS;

                                         -  if you are a broker-dealer that will
                                            receive new debentures or new PATS
                                            for your own account in exchange for
                                            outstanding debentures or
                                            outstanding PATS that were acquired
                                            as a result of market-making
                                            activities, you will deliver a
                                            prospectus, as required by law, in
                                            connection with any resale of such
                                            new debentures or new PATS; and

                                         -  you are not our "affiliate," as
                                            defined in Rule 405 of the
                                            Securities Act, or, if you are our
                                            affiliate, you will comply with any
                                            applicable registration and
                                            prospectus delivery requirements of
                                            the Securities Act.

                                         We will accept for exchange any and all
                                         outstanding debentures and outstanding
                                         PATS which are properly tendered (and
                                         not withdrawn) in the exchange offer
                                         prior to the expiration date. The new
                                         debentures and new PATS issued pursuant
                                         to the exchange offer will be delivered
                                         promptly following the expiration date.
                                         See "The Exchange Offer--Acceptance of
                                         Outstanding Securities for Exchange."

Effect of Not Tendering.............     Outstanding debentures and outstanding
                                         PATS that are not tendered or that are
                                         tendered but not accepted will,
                                         following the completion of the
                                         exchange offer, continue to be subject
                                         to the existing restrictions upon
                                         transfer thereof. We will have no
                                         further obligation to provide for the
                                         registration of such outstanding
                                         debentures or outstanding PATS under
                                         the Securities Act.

Special Procedures for Beneficial
Owners..............................     If you are the beneficial owner of
                                         book-entry interests and your name does
                                         not appear on a security position
                                         listing of DTC as the holder of such
                                         book-entry interests or you own a
                                         beneficial interest in outstanding
                                         debentures or outstanding PATS that are
                                         registered in the name of a broker,
                                         dealer, commercial bank, trust company
                                         or other nominee, and you wish to
                                         tender that book-entry interest of
                                         outstanding debentures or outstanding
                                         PATS in the exchange offer, you should
                                         contact the registered holder promptly
                                         and instruct the registered holder to
                                         tender on your behalf.

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Guaranteed Delivery Procedures......     If you wish to tender your outstanding
                                         debentures or outstanding PATS and
                                         cannot comply, prior to the expiration
                                         date, with the applicable procedures
                                         under the automated tender offer
                                         program of DTC, you must tender your
                                         outstanding debentures or outstanding
                                         PATS according to the guaranteed
                                         delivery procedures described in "The
                                         Exchange Offer--Procedures for
                                         Tendering Outstanding
                                         Securities--Guaranteed Delivery"
                                         beginning on page 20.

Registration Rights Agreements......     We sold the outstanding debentures and
                                         the outstanding PATS on January 17,
                                         2001 in transactions exempt from the
                                         registration requirements of the
                                         Securities Act. In connection with
                                         these sales, we entered into a
                                         registration rights agreement with the
                                         initial purchasers which grants the
                                         holders of the outstanding debentures
                                         and the outstanding PATS exchange
                                         registration rights. This exchange
                                         offer satisfies those rights, which
                                         terminate upon consummation of the
                                         exchange offer. You will not be
                                         entitled to any exchange or
                                         registration rights with respect to the
                                         new debentures or the new PATS.

U.S. Federal Income Tax
Considerations......................     The exchange of outstanding debentures
                                         for new debentures or of outstanding
                                         PATS for new PATS in the exchange offer
                                         will not be a taxable event for U.S.
                                         federal income tax purposes. Please
                                         read "United States Federal Tax
                                         Considerations" on page 44.

Use of Proceeds.....................     We will not receive any cash proceeds
                                         from the issuance of the new debentures
                                         or new PATS.

Exchange Agent......................     We have appointed Bank One Trust
                                         Company, N.A., as the exchange agent
                                         for the exchange offer. The mailing
                                         address and telephone number of the
                                         exchange agent are 1 Bank One Plaza,
                                         Mail Code IL1-0134, Chicago, Illinois
                                         60670-0134, phone: (800) 524-9472. See
                                         "The Exchange Offer--Exchange Agent."

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SUMMARY OF THE TERMS OF THE NEW SECURITIES

NEW DEBENTURES:

New Debentures Offered..............     $700.0 million principal amount of
                                         7.50% Debentures due January 15, 2031,
                                         Series A.

Interest Rate.......................     7.50% per annum.

Interest Payment Dates..............     January 15 and July 15 of each year,
                                         beginning July 15, 2001.

Use of Proceeds.....................     We will not receive any cash proceeds
                                         from the exchange offer.

Ranking.............................     The new debentures will be senior
                                         unsecured and unsubordinated
                                         obligations and will rank equally with
                                         all of our other outstanding unsecured
                                         and unsubordinated indebtedness.

Optional Redemption.................     We may redeem some or all of the new
                                         debentures at any time at prices, plus
                                         accrued and unpaid interest, if any, to
                                         the redemption date, as described in
                                         "Description of the New Securities--New
                                         Debentures."

NEW PATS:

New PATS Offered....................     $400.0 million principal amount of
                                         6.75% Putable Asset Term Securities
                                         (PATS) Putable/Callable January 15,
                                         2006, Series A.

Interest Rates......................     The new PATS will bear interest at the
                                         rate of 6.75% per annum to, but
                                         excluding, January 15, 2006, which is
                                         the Initial Coupon Reset Date, and then
                                         at a fixed or floating rate as
                                         discussed under "Description of the New
                                         Securities--New PATS."

Interest Payment Dates..............     Interest on the new PATS will be
                                         payable on January 15 and July 15 of
                                         each year beginning on July 15, 2001
                                         and continuing to January 15, 2006, and
                                         then at intervals as discussed under
                                         "Description of the New Securities--New
                                         PATS."

Interest Accrual....................     The new PATS will accrue interest at a
                                         fixed rate of 6.75% per annum to, but
                                         excluding, January 15, 2006, computed
                                         on the basis of a 360-day year
                                         consisting of twelve 30-day months.
                                         From January 15, 2006, the new PATS
                                         will accrue interest at a fixed rate or
                                         at a floating rate, depending on
                                         whether we choose to have the new PATS
                                         remarketed for a floating rate period.
                                         If the rate is fixed, interest will be
                                         computed on the basis of a 360-day year
                                         consisting of twelve 30-day months. If
                                         the rate is floating, interest will be
                                         computed on the basis of the actual
                                         number of days in the applicable
                                         floating rate reset period over a
                                         360-day year. For a more detailed
                                         description of the payment of interest,
                                         you should refer to "Description of the
                                         New Securities--New

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                                         PATS--Interest and Interest Payment
                                         Dates" and "--Floating Rate Period."

Use of Proceeds.....................     We will not receive any cash proceeds
                                         from the exchange offer.

Ranking.............................     The new PATS will be senior unsecured
                                         and unsubordinated obligations and will
                                         rank equally with all of our other
                                         outstanding unsecured and
                                         unsubordinated indebtedness.

Call Option.........................     We have assigned to UBS AG, London
                                         Branch, as Callholder, the option to
                                         purchase all of the new PATS on January
                                         15, 2006. If the Callholder purchases
                                         the new PATS on January 15, 2006 and we
                                         choose to have the new PATS remarketed
                                         for a floating rate period, the
                                         Callholder must also purchase the new
                                         PATS on the date on which the floating
                                         rate period ends. The purchase price
                                         for the new PATS will be equal to 100%
                                         of the aggregate principal amount
                                         outstanding if they are purchased on
                                         January 15, 2006 or the Dollar Price if
                                         they are purchased on the last day of
                                         the floating rate period.

                                         For a more detailed description of the
                                         call option, you should refer to
                                         "Description of the Securities--New
                                         PATS--Call Option."

Put Option..........................     If the Callholder does not purchase the
                                         new PATS on January 15, 2006, the
                                         trustee, on behalf of the beneficial
                                         owners, will require us to redeem all
                                         of the new PATS for 100% of the
                                         aggregate principal amount outstanding
                                         plus accrued and unpaid interest, if
                                         any. If we choose to have the new PATS
                                         remarketed for a floating rate period
                                         and the Callholder does not purchase
                                         the new PATS on the last day of the
                                         floating rate period, the trustee, on
                                         behalf of the beneficial owners, will
                                         require us to redeem the new PATS at
                                         the Dollar Price plus accrued and
                                         unpaid interest, if any.

                                         For a more detailed description of the
                                         put option, you should refer to
                                         "Description of the New Securities--New
                                         PATS--Put Option."

Post-Coupon Reset Optional
Redemption..........................     We may redeem some or all of the new
                                         PATS at any time on or after the later
                                         of January 15, 2006 or the end of the
                                         floating rate period, in each case at
                                         the prices, plus accrued and unpaid
                                         interest, if any, to the redemption
                                         date, as described in "Description of
                                         the New Securities--New
                                         PATS--Post-Coupon Reset Optional
                                         Redemption."

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RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS




                                                                                      QUARTER
                                                                                       ENDED
                                                      YEAR ENDED DECEMBER 31,        MARCH 31,
                                                  --------------------------------   ---------
                                                  1996   1997   1998   1999   2000     2001
                                                  ----   ----   ----   ----   ----     ----
                                                                   
Ratio of Earnings to Fixed Charges..............  2.63   2.36   1.70   1.86   2.98     3.83



For purposes of computing these ratios, earnings means income (loss) from
continuing operations before:

  -  income taxes;

  -  extraordinary gain (loss);

  -  minority interest in income (loss) and preferred returns of consolidated
     subsidiaries;

  -  interest expense, net of interest capitalized;

  -  interest expense of 50 percent-owned companies;

  -  that portion of rental expense that we believe to represent an interest
     factor; and

  -  adjustment to equity earnings to exclude equity investments with losses;
     and

  -  adjustment to equity earnings to reflect actual distributions from equity
     investments.

Fixed charges means the sum of the following:

  -  interest expense;

  -  that portion of rental expense that we believe to represent an interest
     factor;

  -  pretax effect of dividends on preferred stock of Williams (1999 and prior);

  -  pretax effect of dividends or preferred stock and other preferred returns
     of consolidated subsidiaries; and;

  -  interest expense of 50 percent-owned companies.

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   14

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RISK FACTORS

WE DEPEND ON PAYMENTS FROM OUR SUBSIDIARIES

The securities offered hereby represent our obligations exclusively. We are a
holding company and conduct substantially all of our operations through
subsidiaries. We perform management, legal, financial, tax, consulting,
administrative and other services for our subsidiaries. Our principal sources of
cash are external financings, dividends and advances from our subsidiaries,
investments, payments by subsidiaries for services rendered and interest
payments from subsidiaries on cash advances. The amount of dividends available
to us from subsidiaries largely depends upon each subsidiary's earnings and
operating capital requirements. The terms of some of our subsidiaries' borrowing
arrangements limit the transfer of funds to us. In addition, the ability of our
subsidiaries to make any payments to us will depend on the subsidiaries'
earnings, business and tax considerations and legal restrictions.

CLAIMS OF HOLDERS OF THE SECURITIES RANK JUNIOR TO THOSE OF CREDITORS OF OUR
SUBSIDIARIES

As a result of the holding company structure, the securities offered hereby will
effectively rank junior to all existing and future debt, trade payables and
other liabilities of our subsidiaries. Any right of us and our creditors to
participate in the assets of any of our subsidiaries upon any liquidation or
reorganization of any such subsidiary will be subject to the prior claims of
that subsidiary's creditors, including trade creditors, except to the extent
that we may ourselves be creditors of such a subsidiary.

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USE OF PROCEEDS

We will not receive any cash proceeds from the issuance of the new debentures in
exchange for the outstanding debentures or from the issuance of the new PATS in
exchange for the outstanding PATS. We are making this exchange solely to satisfy
our obligations under our registration rights agreement. In consideration for
issuing the new debentures, we will receive outstanding debentures in aggregate
principal amount equal to the aggregate principal amount of the new debentures.
In consideration for issuing the new PATS, we will receive outstanding PATS in
aggregate principal amount equal to the aggregate principal amount of the new
PATS.

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THE EXCHANGE OFFER

EXCHANGE TERMS

An aggregate of $700.0 million principal amount of outstanding debentures and an
aggregate of $400.0 million principal amount of outstanding PATS are currently
issued and outstanding. The maximum principal amount of new debentures that will
be issued in exchange for outstanding debentures is $700.0 million, and the
maximum principal amount of new PATS that will be issued in exchange for
outstanding PATS is $400.0 million. The terms of the new debentures and the
outstanding debentures are substantially the same in all material respects,
except that the new debentures will be freely transferable by the holders, other
than as provided in this prospectus. The terms of the new PATS and the
outstanding PATS are substantially the same in all material respects, except
that the new PATS will be freely transferable by the holders, other than as
provided in this prospectus.

The new debentures will bear interest at a rate of 7.50% per year, payable
semiannually on January 15 and July 15 of each year, beginning on July 15, 2001.
The new PATS will bear interest at the rate of 6.75% per annum to, but
excluding, January 15, 2006, which is the Initial Coupon Reset Date, and then at
a fixed or floating rate as discussed under "Description of the New
Securities--New PATS." Interest on the new PATS will be payable on January 15
and July 15 of each year beginning on July 15, 2001 and continuing to January
15, 2006, and then at intervals as discussed under "Description of the New
Securities--New PATS." Holders of new debentures and new PATS will receive
interest from January 17, 2001, the date of the original issuance of the
outstanding debentures and the outstanding PATS, or from the date of the last
payment of interest on the outstanding debentures or the outstanding PATS,
whichever is later. Holders of new debentures and new PATS will not receive any
interest on outstanding debentures and outstanding PATS tendered and accepted
for exchange. In order to exchange your outstanding debentures or outstanding
PATS for transferable new debentures or new PATS in the exchange offer, you will
be required to make the following representations:

  -  any new debentures or new PATS will be acquired in the ordinary course of
     your business;

  -  you have no arrangement with any person to participate in the distribution
     of the new debentures or new PATS; and

  -  you are not our "affiliate," as defined in Rule 405 of the Securities Act,
     or if you are our affiliate, you will comply with the applicable
     registration and prospectus delivery requirements of the Securities Act.

Upon the terms and subject to the conditions set forth in this prospectus and in
the letter of transmittal, we will accept for exchange any outstanding
debentures and outstanding PATS properly tendered in the exchange offer, and the
exchange agent will deliver the new debentures and new PATS promptly after the
expiration date (as defined below) of the exchange offer. We expressly reserve
the right to delay acceptance of any of the tendered outstanding debentures or
outstanding PATS not already accepted if any conditions set forth below under
"--Conditions to the Exchange Offer" have not been satisfied or waived by us or
do not comply, in whole or in part, with any applicable law.

If you tender your outstanding debentures or outstanding PATS, you will not be
required to pay brokerage commissions or fees or, subject to the instructions in
the letter of transmittal, transfer taxes with respect to the exchange of the
outstanding debentures or outstanding PATS. We will pay all charges, expenses
and transfer taxes in connection with the exchange offer, other than certain
taxes described below under "--Transfer Taxes."

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EXPIRATION DATE; EXTENSIONS; TERMINATION; AMENDMENTS


The exchange offer will expire at 5:00 p.m., New York City time, on June 27,
2001, the "expiration date," unless extended by us. We expressly reserve the
right to extend the exchange offer on a daily basis or for such period or
periods as we may determine in our sole discretion from time to time by giving
oral, confirmed in writing, or written notice to the exchange agent and by
making a public announcement by press release to the Dow Jones News Service
prior to 9:00 a.m., New York City time, on the first business day following the
previously scheduled expiration date. During any extension of the exchange
offer, all outstanding debentures or outstanding PATS previously tendered, not
validly withdrawn and not accepted for exchange will remain subject to the
exchange offer and may be accepted for exchange by us.


To the extent we are legally permitted to do so, we expressly reserve the
absolute right, in our sole discretion, to:

  -  waive any condition to the exchange offer; and

  -  amend any of the terms of the exchange offer.

Any waiver or amendment to the exchange offer will apply to all outstanding
debentures and outstanding PATS tendered, regardless of when or in what order
the outstanding debentures and outstanding PATS were tendered. If we make a
material change in the terms of the exchange offer or if we waive a material
condition of the exchange offer, we will disseminate additional exchange offer
materials, and we will extend the exchange offer to the extent required by law.

We expressly reserve the right, in our sole discretion, to terminate the
exchange offer if any of the conditions set forth under "--Conditions to the
Exchange Offer" exist. Any such termination will be followed promptly by a
public announcement. In the event we terminate the exchange offer, we will give
immediate notice to the exchange agent, and all outstanding debentures and
outstanding PATS previously tendered and not accepted for payment will be
returned promptly to the tendering holders.

In the event that the exchange offer is withdrawn or otherwise not completed,
new debentures and new PATS will not be given to holders of outstanding
debentures and outstanding PATS who have tendered their outstanding debentures
and outstanding PATS.

RESALE OF NEW SECURITIES

Based on interpretations of the SEC staff set forth in no action letters issued
to third parties, we believe that new debentures and new PATS issued under the
exchange offer in exchange for outstanding debentures and outstanding PATS may
be offered for resale, resold and otherwise transferred by you without
compliance with the registration and prospectus delivery provisions of the
Securities Act, if:

  -  you are not our "affiliate" within the meaning of Rule 405 under the
     Securities Act;

  -  you are acquiring new debentures and new PATS in the ordinary course of
     your business; and

  -  you do not intend to participate in the distribution of the new debentures
     or new PATS.

If you tender outstanding debentures or outstanding PATS in the exchange offer
with the intention of participating in any manner in a distribution of the new
debentures or new PATS:

  -  you cannot rely on those interpretations by the SEC staff; and

  -  you must comply with the registration and prospectus delivery requirements
     of the Securities Act in connection with a secondary resale transaction and
     that secondary resale transaction must be

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     covered by an effective registration statement containing the selling
     security holder information required by Item 507 or 508, as applicable, of
     Regulation S-K.

Unless an exemption from registration is otherwise available, any security
holder intending to distribute new debentures and new PATS should be covered by
an effective registration statement under the Securities Act containing the
selling security holder's information required by Item 507 of Regulation S-K
under the Securities Act. This prospectus may be used for an offer to resell, a
resale or other retransfer of new debentures and new PATS only as specifically
set forth in this prospectus. Only broker-dealers that acquired the outstanding
debentures or outstanding PATS as a result of market-making activities or other
trading activities may participate in the exchange offer. Each broker-dealer
that receives new debentures or new PATS for its own account in exchange for
outstanding debentures or outstanding PATS, where such outstanding debentures or
outstanding PATS were acquired by such broker-dealer as a result of
market-making activities or other trading activities, must acknowledge that it
will deliver a prospectus in connection with any resale of the new debentures or
new PATS. Under our registration rights agreements, we are required to allow
such broker-dealers and other persons, if any, subject to similar prospectus
delivery requirements, to use this prospectus in connection with the resale of
new debentures and new PATS. Please read the section captioned "Plan of
Distribution" for more details regarding the transfer of new debentures and new
PATS.

ACCEPTANCE OF OUTSTANDING SECURITIES FOR EXCHANGE

We will accept for exchange outstanding debentures and outstanding PATS validly
tendered pursuant to the exchange offer, or defectively tendered, if such defect
has been waived by us, and not withdrawn prior to the later of: (1) the
expiration date of the exchange offer; and (2) the satisfaction or waiver of the
conditions specified below under "--Conditions to the Exchange Offer." We will
not accept outstanding debentures or outstanding PATS for exchange subsequent to
the expiration date of the exchange offer. Tenders of outstanding debentures and
outstanding PATS will be accepted only in principal amounts equal to $1,000 or
integral multiples thereof.

We expressly reserve the right, in our sole discretion, to:

  -  delay acceptance for exchange of outstanding debentures and outstanding
     PATS tendered under the exchange offer, subject to Rule 14e-1 under the
     Exchange Act, which requires that an offeror pay the consideration offered
     or return the securities deposited by or on behalf of the holders promptly
     after the termination or withdrawal of a tender offer; or

  -  terminate the exchange offer and not accept for exchange any outstanding
     debentures or outstanding PATS not theretofore accepted for exchange, if
     any of the conditions set forth below under "--Conditions to the Exchange
     Offer" have not been satisfied or waived by us or in order to comply in
     whole or in part with any applicable law. In all cases, new debentures and
     new PATS will be issued only after timely receipt by the exchange agent of
     certificates representing outstanding debentures or outstanding PATS, or
     confirmation of book-entry transfer, a properly completed and duly executed
     letter of transmittal, or a manually signed facsimile thereof, and any
     other required documents. For purposes of the exchange offer, we will be
     deemed to have accepted for exchange validly tendered outstanding
     debentures and outstanding PATS, or defectively tendered outstanding
     debentures and outstanding PATS with respect to which we have waived such
     defect, if, as and when we give oral, confirmed in writing, or written
     notice to the exchange agent. Promptly after the expiration date, we will
     deposit the new debentures and the new PATS with the exchange agent, who
     will act as agent for the tendering holders for the purpose of receiving
     the new debentures and new PATS and transmitting them to the holders. The
     exchange agent will deliver the new debentures and new PATS to holders of
     outstanding

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                                                                              17
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     debentures and outstanding PATS accepted for exchange after the exchange
     agent receives the new debentures and new PATS.

If for any reason, we delay acceptance for exchange of validly tendered
outstanding debentures or outstanding PATS or we are unable to accept for
exchange validly tendered outstanding debentures or outstanding PATS, then the
exchange agent may, nevertheless, on our behalf, retain tendered outstanding
debentures and outstanding PATS, without prejudice to our rights described under
"--Expiration Date; Extensions; Termination; Amendments," "--Withdrawal of
Tenders" and "--Conditions to the Exchange Offer," subject to Rule 14e-1 under
the Exchange Act, which requires that an offeror pay the consideration offered
or return the securities deposited by or on behalf of the holders thereof
promptly after the termination or withdrawal of a tender offer.

If any tendered outstanding debentures or outstanding PATS are not accepted for
exchange for any reason, or if certificates are submitted evidencing more
outstanding debentures or outstanding PATS than those that are tendered,
certificates evidencing outstanding debentures or outstanding PATS that are not
exchanged will be returned, without expense, to the tendering holder, or, in the
case of outstanding debentures or outstanding PATS tendered by book-entry
transfer into the exchange agent's account at a book-entry transfer facility
under the procedure set forth under "--Procedures for Tendering Outstanding
Securities--Book-Entry Transfer," such outstanding debentures and outstanding
PATS will be credited to the account maintained at such book-entry transfer
facility from which such outstanding debentures or outstanding PATS were
delivered, unless otherwise required by such holder under "Special Delivery
Instructions" in the letter of transmittal, promptly following the exchange date
or the termination of the exchange offer.

Tendering holders of outstanding debentures and outstanding PATS exchanged in
the exchange offer will not be obligated to pay brokerage commissions or
transfer taxes with respect to the exchange of their outstanding debentures or
outstanding PATS other than as described in "--Transfer Taxes" or in Instruction
9 to the letter of transmittal. We will pay all other charges and expenses in
connection with the exchange offer.

PROCEDURES FOR TENDERING OUTSTANDING SECURITIES

Any beneficial owner whose outstanding debentures or outstanding PATS are
registered in the name of a broker, dealer, commercial bank, trust company or
other nominee or held through a book-entry transfer facility and who wishes to
tender outstanding debentures or outstanding PATS should contact such registered
holder promptly and instruct such registered holder to tender outstanding
debentures or outstanding PATS on such beneficial owner's behalf.

Tender of Outstanding Securities Held Through DTC.  The exchange agent and DTC
have confirmed that the exchange offer is eligible for the DTC automated tender
offer program. Accordingly, DTC participants may electronically transmit their
acceptance of the exchange offer by causing DTC to transfer outstanding
debentures or outstanding PATS to the exchange agent in accordance with DTC's
automated tender offer program procedures for transfer. DTC will then send an
agent's message to the exchange agent.

The term "agent's message" means a message transmitted by DTC, received by the
exchange agent and forming part of the book-entry confirmation, which states
that DTC has received an express acknowledgement from the participant in DTC
tendering outstanding debentures or outstanding PATS that are the subject of
that book-entry confirmation that the participant has received and agrees to be
bound by the terms of the letter of transmittal, and that we may enforce such
agreement against such participant. In the case of an agent's message relating
to guaranteed delivery, the term means a message transmitted by DTC and received
by the exchange agent, which states that DTC has received

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an express acknowledgement from the participant in DTC tendering outstanding
debentures or outstanding PATS that they have received and agree to be bound by
the notice of guaranteed delivery.

Tender of Outstanding Securities Held in Physical Form.  For a holder to validly
tender outstanding debentures or outstanding PATS held in physical form:

  -  the exchange agent must receive at its address set forth in this prospectus
     a properly completed and validly executed letter of transmittal, or a
     manually signed facsimile thereof, together with any signature guarantees
     and any other documents required by the instructions to the letter of
     transmittal; and

  -  the exchange agent must receive certificates for tendered outstanding
     debentures or outstanding PATS at such address, or such outstanding
     debentures or outstanding PATS must be transferred pursuant to the
     procedures for book-entry transfer described above. A confirmation of such
     book-entry transfer must be received by the exchange agent prior to the
     expiration date of the exchange offer. A holder who desires to tender
     outstanding debentures or outstanding PATS and who cannot comply with the
     procedures set forth herein for tender on a timely basis or whose
     outstanding debentures or outstanding PATS are not immediately available
     must comply with the procedures for guaranteed delivery set forth below.

LETTERS OF TRANSMITTAL AND OUTSTANDING DEBENTURES AND OUTSTANDING PATS SHOULD BE
SENT ONLY TO THE EXCHANGE AGENT AND NOT TO US OR TO ANY BOOK-ENTRY TRANSFER
FACILITY.

THE METHOD OF DELIVERY OF OUTSTANDING DEBENTURES, OUTSTANDING PATS, LETTERS OF
TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE
ELECTION AND RISK OF THE HOLDER TENDERING OUTSTANDING DEBENTURES AND OUTSTANDING
PATS. DELIVERY OF SUCH DOCUMENTS WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED
BY THE EXCHANGE AGENT. IF SUCH DELIVERY IS BY MAIL, WE SUGGEST THAT THE HOLDER
USE PROPERLY INSURED, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, AND THAT
THE MAILING BE MADE SUFFICIENTLY IN ADVANCE OF THE EXPIRATION DATE OF THE
EXCHANGE OFFER TO PERMIT DELIVERY TO THE EXCHANGE AGENT PRIOR TO SUCH DATE. NO
ALTERNATIVE, CONDITIONAL OR CONTINGENT TENDERS OF OUTSTANDING DEBENTURES OR
OUTSTANDING PATS WILL BE ACCEPTED.

Signature Guarantees.  Signatures on the letter of transmittal must be
guaranteed by an eligible institution unless:

  -  the letter of transmittal is signed by the registered holder of the
     outstanding debentures or outstanding PATS tendered therewith, or by a
     participant in one of the book-entry transfer facilities whose name appears
     on a security position listing it as the owner of those outstanding
     debentures or outstanding PATS, or if any outstanding debentures or
     outstanding PATS for principal amounts not tendered are to be issued
     directly to the holder, or, if tendered by a participant in one of the
     book-entry transfer facilities, any outstanding debentures or outstanding
     PATS for principal amounts not tendered or not accepted for exchange are to
     be credited to the participant's account at the book-entry transfer
     facility, and neither the "Special Issuance Instructions" nor the "Special
     Delivery Instructions" box on the letter of transmittal has been completed,
     or

  -  the outstanding debentures or outstanding PATS are tendered for the account
     of an eligible institution.

An eligible institution is a firm that is a participant in the Security Transfer
Agents Medallion Program or the Stock Exchanges Medallion Program, which is
generally a member of a registered national securities exchange, a member of the
National Association of Securities Dealers, Inc., or a commercial bank or trust
company having an office in the United States.

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Book-Entry Transfer.  The exchange agent will seek to establish a new account or
utilize an outstanding account with respect to the outstanding debentures and
outstanding PATS at DTC promptly after the date of this prospectus. Any
financial institution that is a participant in the book-entry transfer facility
system and whose name appears on a security position listing it as the owner of
the outstanding debentures or outstanding PATS may make book-entry delivery of
outstanding debentures or outstanding PATS by causing the book-entry transfer
facility to transfer such outstanding debentures or outstanding PATS into the
exchange agent's account. HOWEVER, ALTHOUGH DELIVERY OF OUTSTANDING DEBENTURES
AND OUTSTANDING PATS MAY BE EFFECTED THROUGH BOOK-ENTRY TRANSFER INTO THE
EXCHANGE AGENT'S ACCOUNT AT A BOOK-ENTRY TRANSFER FACILITY, A PROPERLY COMPLETED
AND VALIDLY EXECUTED LETTER OF TRANSMITTAL, OR A MANUALLY SIGNED FACSIMILE
THEREOF, MUST BE RECEIVED BY THE EXCHANGE AGENT AT ITS ADDRESS SET FORTH IN THIS
PROSPECTUS ON OR PRIOR TO THE EXPIRATION DATE OF THE EXCHANGE OFFER, OR ELSE THE
GUARANTEED DELIVERY PROCEDURES DESCRIBED BELOW MUST BE COMPLIED WITH.  The
confirmation of a book-entry transfer of outstanding debentures or outstanding
PATS into the exchange agent's account at a book-entry transfer facility is
referred to in this prospectus as a "book-entry confirmation." Delivery of
documents to the book-entry transfer facility in accordance with that book-entry
transfer facility's procedures does not constitute delivery to the exchange
agent.

Guaranteed Delivery.  If you wish to tender your outstanding debentures or
outstanding PATS and:

  -  certificates representing your outstanding debentures or outstanding PATS
     are not lost but are not immediately available;

  -  time will not permit your letter of transmittal, certificates representing
     your outstanding debentures or outstanding PATS and all other required
     documents to reach the exchange agent on or prior to the expiration date of
     the exchange offer, or

  -  the procedures for book-entry transfer cannot be completed on or prior to
     the expiration date of the exchange offer,

then, you may tender if both of the following are complied with:

  -  your tender is made by or through an eligible institution; and

  -  on or prior to the expiration date of the exchange offer, the exchange
     agent has received from the eligible institution a properly completed and
     validly executed notice of guaranteed delivery, by manually signed
     facsimile transmission, mail or hand delivery, in substantially the form
     provided with this prospectus.

The notice of guaranteed delivery must:

  -  set forth your name and address, the registered number(s) of your
     outstanding debentures or outstanding PATS and the principal amount of
     outstanding debentures or outstanding PATS tendered;

  -  state that the tender is being made thereby;

  -  guarantee that, within three New York Stock Exchange trading days after the
     expiration date of the exchange offer, the letter of transmittal or
     facsimile thereof properly completed and validly executed, together with
     certificates representing the outstanding debentures or outstanding PATS,
     or a book-entry confirmation, and any other documents required by the
     letter of transmittal and the instructions thereto, will be deposited by
     the eligible institution with the exchange agent; and

  -  the exchange agent receives the properly completed and validly executed
     letter of transmittal or facsimile thereof with any required signature
     guarantees, together with certificates for all outstanding debentures or
     outstanding PATS in proper form for transfer, or a book-entry

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 20
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     confirmation, and any other required documents, within three New York Stock
     Exchange trading days after the date of the notice of guaranteed delivery.

Other Matters.  New debentures and new PATS will be issued in exchange for
outstanding debentures and outstanding PATS accepted for exchange only after
timely receipt by the exchange agent of:

  -  certificates for (or a timely book-entry confirmation with respect to) your
     outstanding debentures or outstanding PATS, a properly completed and duly
     executed letter of transmittal or facsimile thereof with any required
     signature guarantees, or, in the case of a book-entry transfer, an agent's
     message; and

  -  any other documents required by the letter of transmittal.

All questions as to the form of all documents and the validity, including time
of receipt, and acceptance of all tenders of outstanding debentures or
outstanding PATS will be determined by us, in our sole discretion, the
determination of which shall be final and binding. ALTERNATIVE, CONDITIONAL OR
CONTINGENT TENDERS OF OUTSTANDING DEBENTURES OR OUTSTANDING PATS WILL NOT BE
CONSIDERED VALID.  We reserve the absolute right to reject any or all tenders of
outstanding debentures or outstanding PATS that are not in proper form or the
acceptance of which, in our opinion, would be unlawful. We also reserve the
right to waive any defects, irregularities or conditions of tender as to
particular outstanding debentures or outstanding PATS.

Our interpretation of the terms and conditions of the exchange offer, including
the instructions in the letter of transmittal, will be final and binding.

Any defect or irregularity in connection with tenders of outstanding debentures
or outstanding PATS must be cured within the time we determine, unless waived by
us. Tenders of outstanding debentures and outstanding PATS will not be deemed to
have been made until all defects and irregularities have been waived by us or
cured. Neither we, the exchange agent nor any other person will be under any
duty to give notice of any defects or irregularities in tenders of outstanding
debentures or outstanding PATS, or will incur any liability to holders for
failure to give any such notice.

By signing or agreeing to be bound by the letter of transmittal, you will
represent to us that, among other things:

  -  any new debentures or new PATS that you receive will be acquired in the
     ordinary course of your business;

  -  you have no arrangement or understanding with any person or entity to
     participate in the distribution of the new debentures or new PATS;

  -  if you are not a broker-dealer, you are not engaged in and do not intend to
     engage in the distribution of the new debentures or new PATS;

  -  if you are a broker-dealer that will receive new debentures and new PATS
     for your own account in exchange for outstanding debentures or outstanding
     PATS that were acquired as a result of market-making activities, you will
     deliver a prospectus, as required by law, in connection with any resale of
     those new debentures and new PATS; and

  -  you are not our "affiliate," as defined in Rule 405 of the Securities Act,
     or, if you are an affiliate, you will comply with any applicable
     registration and prospectus delivery requirements of the Securities Act.

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WITHDRAWAL OF TENDERS

Except as otherwise provided in this prospectus, you may withdraw your tender of
outstanding debentures or outstanding PATS at any time prior to 5:00 p.m., New
York City time, on the expiration date.

For a withdrawal to be effective:

  -  the exchange agent must receive a written notice of withdrawal at its
     address set forth below under "--Exchange Agent," or

  -  you must comply with the appropriate procedures of DTC's automated tender
     offer program system.

Any notice of withdrawal must:

  -  specify the name of the person who tendered the outstanding debentures or
     outstanding PATS to be withdrawn; and

  -  identify the outstanding debentures or outstanding PATS to be withdrawn,
     including the principal amount of the outstanding debentures or outstanding
     PATS.

If outstanding debentures or outstanding PATS have been tendered pursuant to the
procedure for book-entry transfer described above, any notice of withdrawal must
specify the name and number of the account at DTC to be credited with the
withdrawn outstanding debentures or outstanding PATS and otherwise comply with
the procedures of DTC.

We will determine all questions as to the validity, form, eligibility and time
of receipt of notice of withdrawal, and our determination shall be final and
binding on all parties. We will deem any outstanding debentures or outstanding
PATS so withdrawn not to have been validly tendered for exchange for purposes of
the exchange offer.

Any outstanding debentures or outstanding PATS that have been tendered for
exchange but that are not exchanged for any reason will be returned to their
holder without cost to the holder or, in the case of outstanding debentures or
outstanding PATS tendered by book-entry transfer into the exchange agent's
account at DTC according to the procedures described above, such outstanding
debentures or outstanding PATS will be credited to an account maintained with
DTC for the outstanding debentures or outstanding PATS. This return or crediting
will take place as soon as practicable after withdrawal, rejection of tender or
termination of the exchange offer. You may retender properly withdrawn
outstanding debentures or outstanding PATS by following one of the procedures
described under "--Procedures for Tendering Outstanding Securities" at any time
on or prior to the expiration date.

CONDITIONS TO THE EXCHANGE OFFER

We will not be required to accept for exchange, or exchange any new debentures
for, any outstanding debentures tendered, nor will we be required to accept for
exchange, or exchange any new PATS for, any outstanding PATS tendered, and we
may terminate, extend or amend the exchange offer and may, subject to Rule 14e-1
under the Exchange Act, which requires that an offeror pay the consideration
offered or return the securities deposited by or on behalf of the holders
thereof promptly after the termination or withdrawal of a tender offer, postpone
the acceptance for exchange of outstanding debentures and outstanding PATS so
tendered if, on or prior to the expiration date of the exchange offer, the
following shall have occurred:

  -  we have determined that the offering and sales under the registration
     statement, the filing of such registration statement or the maintenance of
     its effectiveness would require disclosure of or would interfere in any
     material respect with any material financing, merger, offering or other

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     transaction involving us or would otherwise require disclosure of nonpublic
     information that could materially and adversely affect us; or

  -  we have determined that the exchange offer would violate any applicable law
     or interpretation of the staff of the SEC.

The conditions to the exchange offer are for our sole benefit and may be
asserted by us in our sole discretion or may be waived by us, in whole or in
part, in our sole discretion, whether or not any other condition of the exchange
offer also is waived. We have not made a decision as to what circumstances would
lead us to waive any condition, and any waiver would depend on circumstances
prevailing at the time of that waiver. Any determination by us concerning the
events described in this section shall be final and binding upon all persons.

ALTHOUGH WE HAVE NO PRESENT PLANS OR ARRANGEMENTS TO DO SO, WE RESERVE THE RIGHT
TO AMEND, AT ANY TIME, THE TERMS OF THE EXCHANGE OFFER. WE WILL GIVE HOLDERS
NOTICE OF ANY AMENDMENTS IF REQUIRED BY APPLICABLE LAW.

TRANSFER TAXES

We will pay all transfer taxes applicable to the transfer and exchange of
outstanding debentures and outstanding PATS pursuant to the exchange offer. If,
however:

  -  delivery of the new debentures or new PATS and/or certificates for
     outstanding debentures or outstanding PATS for principal amounts not
     exchanged, are to be made to any person other than the record holder of the
     outstanding debentures or outstanding PATS tendered;

  -  tendered certificates for outstanding debentures or outstanding PATS are
     recorded in the name of any person other than the person signing any letter
     of transmittal; or

  -  a transfer tax is imposed for any reason other than the transfer and
     exchange of outstanding debentures or outstanding PATS to us or our order,
     then the amount of any such transfer taxes, whether imposed on the record
     holder or any other person, will be payable by the tendering holder prior
     to the issuance of the new debentures or new PATS.

CONSEQUENCES OF FAILURE TO EXCHANGE

If you do not exchange your outstanding debentures for new debentures or
exchange your outstanding PATS for new PATS in the exchange offer, you will
remain subject to the restrictions on transfer of the outstanding debentures or
outstanding PATS:

  -  as set forth in the legend printed on the debentures or PATS as a
     consequence of the issuance of the outstanding debentures or outstanding
     PATS pursuant to the exemptions from, or in transactions not subject to,
     the registration requirements of the Securities Act and applicable state
     securities laws; and

  -  otherwise set forth in the memorandums distributed in connection with the
     private offerings of the outstanding debentures and outstanding PATS.

In general, you may not offer or sell the outstanding debentures or outstanding
PATS unless they are registered under the Securities Act, or if the offer or
sale is exempt from registration under the Securities Act and applicable state
securities laws. Except as required by the registration rights agreement, we do
not intend to register resales of the outstanding debentures or outstanding PATS
under the Securities Act. Based on interpretations of the SEC staff, you may
offer for resale, resell or otherwise transfer new debentures and new PATS
issued in the exchange offer without compliance with the registration and
prospectus delivery provisions of the Securities Act, provided that (1) you are

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not our "affiliate" within the meaning of Rule 405 under the Securities Act, (2)
you acquired the new debentures or new PATS in the ordinary course of your
business and (3) you have no arrangement or understanding with respect to the
distribution of the new debentures or new PATS to be acquired in the exchange
offer. If you tender outstanding debentures or new PATS in the exchange offer
for the purpose of participating in a distribution of the new debentures or new
PATS:

  -  you cannot rely on the applicable interpretations of the SEC; and

  -  you must comply with the registration and prospectus delivery requirements
     of the Securities Act in connection with a secondary resale transaction and
     that secondary resale transaction must be covered by an effective
     registration statement containing the selling security holder information
     required by Item 507 or 508, as applicable, of Regulation S-K.

EXCHANGE AGENT

Bank One Trust Company, N.A., has been appointed as exchange agent for the
exchange offer. You should direct questions and requests for assistance,
requests for additional copies of this prospectus, the letter of transmittal or
any other documents to the exchange agent. You should send certificates for
outstanding debentures, outstanding PATS, letters of transmittal and any other
required documents to the exchange agent addressed as follows:

                          Bank One Trust Company, N.A.
                                1 Bank One Plaza
                               Mail Code IL1-0134
                          Chicago, Illinois 60670-0134
                           Attention: Exchanges Floor
                        Global Corporate Trust Services

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DESCRIPTION OF THE NEW SECURITIES

We will issue the new debentures under an indenture dated as of November 10,
1997, as amended by a fifth supplemental indenture dated January 17, 2001,
between us and Bank One Trust Company, N.A., as trustee. The outstanding
debentures were also issued under this indenture and indenture supplement. The
terms of the outstanding debentures are identical in all material respects to
the terms of the new debentures, except that the outstanding debentures contain
terms with respect to transfer restrictions (and therefore are not freely
tradeable).

We will issue the new PATS under an indenture dated as of November 10, 1997, as
amended by a fourth supplemental indenture dated January 17, 2001, between us
and Bank One Trust Company, N.A., as trustee. The outstanding PATS were also
issued under this indenture and indenture supplement. The terms of the
outstanding PATS are identical in all material respects to the terms of the new
PATS, except that the outstanding PATS contain terms with respect to transfer
restrictions (and therefore are not freely tradeable).

The terms of the debentures and the PATS include those set forth in the
indenture and those made a part of the indenture by reference to the Trust
Indenture Act of 1939. The following description is a summary of the material
provisions of the debentures, the PATS and the indenture. It does not restate
the indenture in its entirety. We urge you to read the indenture because it, and
not this description, defines your rights as holders of the debentures and the
PATS. Copies of the indenture are available at the offices of the trustee.

The new debentures and new PATS will be our unsecured and unsubordinated
obligations ranking equally with our other outstanding unsecured and
unsubordinated indebtedness.

TERMS AND CONDITIONS OF THE NEW DEBENTURES

The new debentures will mature on January 15, 2031. The new debentures will bear
interest from their date of issuance at the rate of 7.50% per annum. Interest
will be payable semi-annually on January 15 and July 15 of each year, beginning
July 15, 2001, to the person in whose names the new debentures are registered at
the close of business on the preceding January 1 and July 1, respectively,
subject to certain exceptions. Interest on the new debentures will be computed
on the basis of a 360-day year comprised of twelve 30-day months.

The new debentures will be redeemable, in whole or in part, at any time, at our
option, at a redemption price equal to the greater of:

  -  100% of the principal amount of the new debentures then outstanding to be
     redeemed, or

  -  the sum of the present values of the remaining scheduled payments of
     principal and interest thereon from the redemption date to the maturity
     date computed by discounting such payments to the redemption date on a
     semi-annual basis (assuming a 360-day year consisting of twelve 30-day
     months) at a rate equal to the sum of 30 basis points plus the Adjusted
     Treasury Rate on the third Business Day prior to the redemption date, as
     calculated by an Independent Investment Banker.

We will mail notice of redemption at least 30 days but not more than 60 days
before the applicable redemption date to each holder of the new debentures to be
redeemed. If we elect to partially redeem the new debentures, the trustee will
select in a fair and appropriate manner the new debentures to be redeemed.

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Upon the payment of the redemption price, plus accrued and unpaid interest, if
any, to the date of redemption, interest will cease to accrue on and after the
applicable redemption date on the new debentures or portions thereof called for
redemption.

We may, without the consent of the holders of the new debentures, issue
additional notes having the same ranking and the same interest rate, maturity
and other terms as the new debentures. Any additional notes will, together with
the new debentures, constitute a single series of the debentures under the
indenture. No additional debentures may be issued if an Event of Default has
occurred with respect to the new debentures.

TERMS AND CONDITIONS OF THE NEW PATS

GENERAL

The new PATS will mature on January 15, 2016 unless extended to the tenth
anniversary of the Floating Period Termination Date, in which case the new PATS
will mature not later than January 15, 2017. We may be required to redeem the
new PATS before that maturity. date as described in "--Put Option" below. We may
also redeem some or all of the new PATS after the Fixed Rate Coupon Reset Date
as described in "--Post-Coupon Reset Optional Redemption" below. The new PATS
may also be purchased by the Callholder as described in "--Call Option" below.

The new PATS will initially be issued only in registered, book-entry form, in
denominations of $1,000 and any integral multiples of $1,000 as described under
"--Book-Entry Only Issuance -- The Depository Trust Company" below. We will
issue global securities in denominations that together equal the total principal
amount of the outstanding new PATS.

If any interest, principal or other payment date of the new PATS (including any
payment date in connection with the Call Option or the Put Option as described
below) does not fall on a Business Day, a payment otherwise payable on that day
will be made on the next succeeding Business Day, and no interest will accrue in
respect of the amounts which payment is so delayed for the period from and after
such interest payment date, maturity date or other payment date, except that, in
the case of an interest payment date or other payment date occurring during the
Floating Rate Period, interest on principal will continue to accrue until the
next succeeding Business Day.

INTEREST AND INTEREST PAYMENT DATES

The new PATS will bear interest at the rate of 6.75% per annum from the date of
issuance of the outstanding PATS to, but excluding, January 15, 2006. We will
pay interest semi-annually on January 15 and July 15 of each year, beginning on
July 15, 2001.

We will pay interest on the new PATS, accruing from the Fixed Rate Coupon Reset
Date, semi-annually on each day that is a six-month anniversary of that date.
Interest on the new PATS from the Fixed Rate Coupon Reset Date will be computed
on the basis of a 360-day year consisting of twelve 30-day months.

Interest on the new PATS accruing during any Floating Rate Reset Period will be
payable on the next following Reference Rate Reset Date if such date is a
Business Day or, if not, then on the next following Business Day. Interest on
the new PATS during the Floating Rate Period will be computed on the basis of
the actual number of days in the applicable Floating Rate Reset Period over a
360-day year.

Interest payable on any interest payment date will be payable to the persons in
whose names the new PATS are registered at the close of business on the Business
Day immediately preceding the related interest payment date.

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Interest payments will be in the amount of interest accrued from and including
the next preceding interest payment date (or from and including the date of
issuance if no interest has been paid or duly provided for with respect to the
new PATS) to but excluding the relevant interest payment date, Coupon Reset
Date, redemption date or the maturity date, as the case may be.

Interest to be payable from and including each Coupon Reset Date will be
calculated by UBS Warburg LLC, as the Calculation Agent appointed by us pursuant
to the indenture. We will agree to indemnify the Calculation Agent against
certain liabilities, arising out of or in connection with its duties under the
indenture.

The indenture provides that the Calculation Agent may resign at any time as
Calculation Agent effective ten Business Days after the delivery of written
notice to us and the trustee. In such case, we may appoint a successor
Calculation Agent.

The Calculation Agent, in its individual capacity, may buy, sell, hold and deal
in new PATS and may exercise any vote or join in any action which any holder of
new PATS may be entitled to exercise or take as if it were not the Calculation
Agent. The Calculation Agent, in its individual capacity, may also engage in any
transaction with us or any of our affiliates as if it were not the Calculation
Agent.

If the Callholder elects to purchase the new PATS, then by 3:30 p.m., New York
City time, on the third Business Day immediately preceding any applicable Coupon
Reset Date, the Calculation Agent will determine either (a) the Floating Rate
Spread, in the case of the Initial Coupon Reset Date where we have elected to
exercise our Floating Period Option, or (b) the Interest Rate to Maturity, to
the nearest one hundredth of one percent per annum, unless we are required to
redeem the new PATS. Each Floating Period Interest Rate will equal the sum of
the Reference Rate and the Floating Rate Spread, and the Interest Rate to
Maturity will equal the sum of the Base Rate and the Applicable Spread. Both the
Floating Rate Spread and the Applicable Spread will be based on the Dollar Price
of the new PATS. The Floating Period Interest Rate, the Interest Rate to
Maturity and the Dollar Price for the new PATS as announced by the Calculation
Agent, absent manifest error, will be binding and conclusive upon the beneficial
owners, us and the trustee.

FLOATING RATE PERIOD

Following the Callholder's election to purchase the new PATS in connection with
the Initial Coupon Reset Date, but prior to the Floating Period Notification
Date, which will be the fourth Business Day prior to the Initial Coupon Reset
Date, we may elect to exercise our Floating Period Option. If we so elect, the
new PATS will bear interest at the Floating Period Interest Rate until the
Floating Period Termination Date, which will be the earlier of January 15, 2007,
or the date which otherwise would be the Reference Rate Reset Date following the
Floating Period Termination Notification Date. The Floating Period Termination
Notification Date will be at least four Business Days prior to such Reference
Rate Reset Date. In the event that we exercise our Floating Period Option, the
maturity date of the new PATS will be extended to the tenth anniversary of the
Floating Period Termination Date, in which case the new PATS will mature not
later than January 15, 2017.

The amount of interest payable for each day that the new PATS are outstanding
during the Floating Rate Period will be calculated by dividing the Floating
Period Interest Rate in effect for such day by 360 and multiplying the result by
the Dollar Price. The amount of interest payable for any Floating Rate Reset
Period will be calculated by adding the interest payable for each day in the
Floating Rate Reset Period.

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COUPON RESET PROCESS

If the Callholder has exercised the Call Option as set forth below under "--Call
Option," we and the Calculation Agent will complete the following steps in order
to determine each Coupon Reset Rate. We and the Calculation Agent will use
reasonable efforts to cause the actions contemplated below to be completed in as
timely a manner as possible.

     (a)  We will provide the Calculation Agent with a list, no later than five
     Business Days prior to the applicable Coupon Reset Date, containing the
     names and addresses of up to five Reference Corporate Dealers or Reference
     Money Market Dealers, as the case may be, from which it desires the
     Calculation Agent to obtain Fixed Rate Bids or Floating Rate Bids for the
     purchase of the new PATS.

     (b)  Within one Business Day following receipt by the Calculation Agent of
     the dealer list referred to above, the Calculation Agent will provide to
     each dealer on that list:

      -  a copy of the Confidential Offering Memorandum dated January 11, 2001
         relating to the original offering of the PATS;

      -  a copy of the form of the new PATS; and

      -  a written request that each dealer submit a Fixed Rate Bid or Floating
         Rate Bid, as the case may be, to the Calculation Agent by 3:30 p.m.,
         New York City time (the "Bid Deadline"), on the third Business Day
         prior to the Coupon Reset Date (the "Bid Date").

     Each dealer will be provided with:

      -  our name

      -  an estimate of the Dollar Price;

      -  the principal amount and maturity of the new PATS; and

      -  the method by which interest will be calculated on the new PATS.

     (c)  Following receipt of the bids, the Calculation Agent will provide
     written notice to us of:

      -  the name of each of the dealers from whom the Calculation Agent
         received bids on the Bid Date;

      -  the bid submitted by each of those dealers; and

      -  the Dollar Price.

     (d)  Immediately after calculating the Coupon Reset Rate, the Calculation
     Agent will provide written notice of that Coupon Reset Rate to us, the
     trustee and the dealer submitting the lowest applicable bid.

CALL OPTION

On a Business Day not earlier than 20 Business Days prior to the Initial Coupon
Reset Date, and not later than 4:00 p.m., New York City time, on the 15th
Business Day prior to the Initial Coupon Reset Date, the Callholder will notify
us and the trustee as to whether it elects to purchase the new PATS for
remarketing.

If the Callholder so elects, the new PATS will be subject to mandatory tender,
and will be deemed tendered, to the Callholder for purchase and remarketing, and
the Callholder will be obligated to purchase and remarket the new PATS, on the
Initial Coupon Reset Date and, if we choose to exercise our Floating Period
Option, on the Floating Period Termination Date, in accordance with the terms

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and subject to the conditions described in the indenture; provided, however,
that if the Initial Coupon Reset Date or Floating Period Termination Date is not
a Business Day, the foregoing actions will be taken on the next succeeding
Business Day.

On the Fixed Rate Coupon Reset Date, the new PATS will be remarketed by the
Callholder at a fixed rate of interest equal to the Interest Rate to Maturity.
If the Callholder elects to purchase the new PATS and if we exercise our
Floating Period Option, the maturity of the new PATS will be automatically
extended to the tenth anniversary of the Floating Period Termination Date. If we
so elect, the new PATS will bear interest at the Floating Period Interest Rate
until the Floating Period Termination Date, at which time the new PATS will be
remarketed at a fixed rate of interest equal to the Interest Rate to Maturity
unless we are required to redeem the new PATS.

The call price of the tendered new PATS will be equal to 100% of their aggregate
principal amount on the Initial Coupon Reset Date, or the Dollar Price on the
Floating Period Termination Date. In the event of exercise of the Call Option,
then (i) not later than 12:00 noon, New York City time, on the Initial Coupon
Reset Date or the Floating Period Termination Date, as the case may be, the
Callholder will deliver the call price in immediately available funds to the
trustee for payment of the call price on that Coupon Reset Date and (ii) the
holders of the new PATS will be required to deliver the new PATS to the
Callholder against payment therefor on that Coupon Reset Date through the
facilities of DTC; provided, however, that if any Coupon Reset Date is not a
Business Day, the actions required by the foregoing clauses will be taken on the
next succeeding Business Day.

If the Callholder elects to exercise the Call Option, the obligation of the
Callholder to pay the call price is subject to various conditions precedent. In
addition, the Call Option may be terminated in certain circumstances prior to
the time the Callholder exercises the Call Option. No holder of new PATS shall
have any rights or claims against the Callholder as a result of the Callholder
purchasing or not purchasing the new PATS.

If the Callholder elects to exercise the Call Option, on the applicable Coupon
Reset Date or, if such Coupon Reset Date is not a Business Day, on the next
succeeding Business Day, the Callholder will sell the aggregate principal amount
of the new PATS at the Dollar Price to the Reference Corporate Dealer or to the
Reference Money Market Dealer, whichever is applicable, providing the lowest
Fixed or Floating Rate Bid, in the case of the Initial Coupon Reset Date, or the
lowest Fixed Rate Bid, in the case of the Floating Period Termination Date. If
the lowest applicable Bid is submitted by two or more of the applicable
Reference Dealers, the Callholder will sell the new PATS to one or more of such
Reference Dealers, as it will determine in its sole discretion.

If for any reason the Callholder does not purchase the new PATS on the relevant
Coupon Reset Date, or if such Coupon Reset Date is not a Business Day, on the
next succeeding Business Day, we will be required to redeem the new PATS at a
price equal to 100% of their aggregate principal amount, plus accrued and unpaid
interest, if any, if such Coupon Reset Date is the Initial Coupon Reset Date, or
at the Dollar Price, plus accrued and unpaid interest, if any, if such Coupon
Reset Date is the Floating Period Termination Date. See "--Put Option" below.

PUT OPTION

If the Call Option has not been exercised, or in the event the Callholder is not
required or fails to deliver the call price to the trustee not later than 12:00
noon, New York City time, on the relevant Coupon Reset Date, or if such Coupon
Reset Date is not a Business Day at such time on the next succeeding Business
Day, the trustee will be required for and on behalf of the holders of the new
PATS to exercise the option to put the new PATS to us pursuant to the indenture.
Upon exercise of the Put Option, we will be required to redeem all of the new
PATS on the applicable Coupon Reset Date at a redemption price equal to 100% of
the aggregate principal amount of the new PATS, if such Coupon

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Reset Date is the Initial Coupon Reset Date, or at the Dollar Price on the
Floating Period Termination Date (in each case, the "Put Redemption Price"). The
Put Option will be exercised automatically by the trustee, on behalf of the
holders, if the Call Option has not been exercised, or in the event the
Callholder is not required or fails to deliver the call price to the trustee. If
the trustee exercises the Put Option, we will deliver the Put Redemption Price
to the trustee, together with the accrued and unpaid interest due on the
applicable Coupon Reset Date, by no later than 2:00 p.m., New York City time, on
such Coupon Reset Date, or if such Coupon Reset Date is not a Business Day at
such time on the next succeeding Business Day, and the holders of the new PATS
will be required to deliver the new PATS to us against payment therefor on the
Coupon Reset Date through the facilities of DTC. No holder of any new PATS or
interest therein has the right to consent or object to the trustee's duty to
exercise the Put Option.

POST-COUPON RESET OPTIONAL REDEMPTION

After the Fixed Rate Coupon Reset Date, the new PATS are redeemable, in whole or
in part, at any time, at our option, at a redemption price equal to the greater
of:

  -  100% of the principal amount of the new PATS then outstanding to be
     redeemed, or

  -  the sum of the present values of the remaining scheduled payments of
     principal and interest thereon from the redemption date to the maturity
     date calculated by discounting such payments to the redemption date on a
     semi-annual basis (assuming a 360-day year consisting of twelve 30-day
     months) at a rate equal to the sum of 20 basis points plus the Adjusted
     Treasury Rate on third Business Day prior to the redemption date, as
     calculated by an Independent Investment Banker.

We will mail notice of redemption at least 30 days but not more than 60 days
before the applicable redemption date to each holder of the new PATS to be
redeemed. If we elect to partially redeem the new PATS, the trustee will select
in a fair and appropriate manner the new PATS to be redeemed.

Upon the payment of the redemption price plus accrued and unpaid interest, if
any, to the date of redemption, interest will cease to accrue on and after the
applicable redemption date on the new PATS or portions thereof called for
redemption.

SETTLEMENT

In the event that the new PATS are purchased by the Callholder, the Callholder
will pay to the trustee, in same day funds not later than 12:00 noon, New York
City time, on the Initial Coupon Reset Date, or if such Coupon Reset Date is not
a Business Day, at such time on the next succeeding Business Day, an amount
equal to 100% of the aggregate principal amount of the new PATS or on the
Floating Period Termination Date, or if such Floating Period Termination Date is
not a Business Day, on the next succeeding Business Day an amount equal to the
Dollar Price.

On any such Coupon Reset Date, or if such Coupon Reset Date is not a Business
Day, on the next succeeding Business Day, the Callholder will cause the trustee
to make payment of the purchase price for the tendered new PATS that have been
purchased for remarketing by the Callholder to DTC for the payment to the DTC
participant of each tendering beneficial owner of new PATS. This payment will be
made against delivery through DTC of the beneficial owner's new PATS by
book-entry through DTC by the close of business on the Coupon Reset Date, or if
such Coupon Reset Date is not a Business Day, on the next succeeding Business
Day.

We will also make or cause the trustee to make, payment of interest to DTC for
payment to the DTC Participant of each beneficial owner of new PATS, due on a
Coupon Reset Date by book-entry through

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DTC, by the close of business on such Coupon Reset Date, or if such Coupon Reset
Date is not a Business Day, on the next succeeding Business Day.

The transactions described above will be executed on the applicable Coupon Reset
Date, or if such Coupon Reset Date is not a Business Day, on the next succeeding
Business Day, through DTC in accordance with the procedures of DTC, and the
accounts of the respective Participants will be debited and credited, and the
new PATS delivered by book-entry as necessary to effect the purchases and sales
thereof.

All payments of principal and interest in respect of the new PATS in book-entry
form will be made in immediately available funds. The new PATS will trade in
DTC's Same-Day Funds Settlement System until the maturity date, as it may be
extended, or the Post-Coupon Reset Redemption Date, as the case may be, or until
the new PATS are issued in certificated form. Secondary market trading activity
in the new PATS will be required by DTC to settle in immediately available
funds.

The tender and settlement procedures described above, including the provisions
for payment to selling beneficial owners of tendered new PATS, or for payment by
the purchasers of new PATS, in a remarketing, may be modified to the extent
required by DTC or, if the book-entry system is no longer available for the new
PATS at the time of a remarketing, to the extent required to facilitate the
tendering and remarketing of new PATS in certificated form. In addition, the
Callholder may modify the settlement procedures set forth above in order the
facilitate the settlement process.

As long as DTC or its nominee holds a certificate representing the new PATS in
the book-entry system of DTC, no certificates for the new PATS will be delivered
to any beneficial owner. In addition, under the terms of new PATS, and the
indenture, we have agreed that (1) we will use our reasonable best efforts to
maintain the new PATS in book-entry form with DTC or any successor thereto, and
to appoint a successor depositary to the extent necessary to maintain the new
PATS in book-entry form, and (2) we will waive any discretionary right we
otherwise have under our indenture to cause the new PATS to be issued in
certificated form.

CALLHOLDER

If the Callholder elects to purchase the new PATS, the Callholder will not
receive any fees or reimbursement of expenses from us in connection with the
purchase and remarketing of the new PATS.

On or after the Fixed Rate Coupon Reset Date, we may at any time purchase any
new PATS at any price in the open market or otherwise. The new PATS so purchased
by us may, at our discretion, be held, resold or surrendered to the trustee for
cancellation.

RECENT ACCOUNTING DEVELOPMENTS

For purposes of financial accounting and reporting for publicly held companies,
the Securities and Exchange Commission may require prospective investors to
separately account for the Callholder's option to purchase and to remarket the
new PATS on the Initial Coupon Reset Date. Persons considering investing in the
new PATS, who are required to file financial reports with the Securities and
Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended,
should consult their own accounting advisors concerning potential reporting
requirements.

TERMS AND CONDITIONS APPLICABLE TO THE NEW DEBENTURES AND THE NEW PATS

COVENANTS

Liens.  The indenture refers to any of our instruments securing indebtedness,
such as a mortgage, pledge, lien, security interest or encumbrance on any of our
property, as a "mortgage." The indenture further provides that, subject to
certain exceptions, we will not, nor will we permit any subsidiary to,

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issue, assume or guarantee any indebtedness secured by a mortgage unless we
provide equal and proportionate security for the senior debt securities we issue
under the indenture. Among these exceptions are:

  -  certain purchase money mortgages;

  -  certain preexisting mortgages on any property acquired or constructed by us
     or a subsidiary;

  -  certain mortgages created within one year after completion of such
     acquisition or construction;

  -  certain mortgages created on any contract for the sale of products or
     services related to the operation or use of any property acquired or
     constructed within one year after completion of such acquisition or
     construction;

  -  mortgages on property of a subsidiary existing at the time it became our
     subsidiary; and

  -  mortgages, other than as specifically excepted, in an aggregate amount
     which, at the time of, and after giving effect to, the incurrence does not
     exceed five percent of Consolidated Net Tangible Assets.

Consolidation, Merger, Conveyance of Assets.  The indenture provides, in
general, that we will not consolidate with or merge into any other entity or
convey, transfer or lease its properties and assets substantially as an entirety
to any person, unless:

  -  the corporation, limited liability company, limited partnership, joint
     stock company or trust formed by such consolidation or into which we are
     merged or the person which acquires such assets expressly assumes our
     obligations under the indenture and the debt securities issued under the
     indenture; and

  -  immediately after giving effect to such transaction, no event of default,
     and no event which, after notice or lapse of time or both, would become an
     event of default, shall have happened and be continuing.

Event Risk.  Except for the limitations on liens described above, none of the
indenture, the debentures nor the PATS contains any covenants or other
provisions designed to afford holders of the new debentures or the new PATS
protection in the event of a highly leveraged transaction involving us or any
restrictions on the amount of additional indebtedness that we may issue.

MODIFICATION OF THE INDENTURE

The indenture provides that we and the trustee may enter into supplemental
indentures which conform to the provisions of the Trust Indenture Act of 1939
without the consent of the holders to, in general:

  -  secure any debt securities;

  -  evidence the assumption by a successor person of our obligations;

  -  add further covenants for the protection of the holders;

  -  cure any ambiguity or correct any inconsistency in the indenture, so long
     as such action will not adversely affect the interests of the holders;

  -  establish the form or terms of debt securities of any series; and

  -  evidence the acceptance of appointment by a successor trustee.

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The indenture also permits us and the trustee to:

  -  add any provisions to the indenture;

  -  change in any manner the indenture;

  -  eliminate any of the provisions of the indenture; and

  -  modify in any way the rights of the holders of debt securities of each
     series affected.

The above actions require the consent of the holders of at least a majority in
principal amount of debt securities of each series issued under the indenture
then outstanding and affected. These holders will vote as one class to approve
such changes. The 7.50% Debentures and the new PATS will constitute two
different series under the indenture.

Such changes must, however, conform to the Trust Indenture Act of 1939 and we
and the trustee may not, without the consent of each holder of outstanding debt
securities affected thereby:

  -  extend the final maturity of the principal of any debt securities;

  -  reduce the principal amount of any debt securities;

  -  reduce the rate or extend the time of payment of interest on any debt
     securities;

  -  reduce any amount payable on redemption of any debt securities;

  -  change the currency in which the principal, including any amount in respect
     of original issue discount, or interest on any debt securities is payable;

  -  reduce the amount of any original issue discount security payable upon
     acceleration or provable in bankruptcy;

  -  alter certain provisions of the indenture relating to debt securities not
     denominated in U.S. dollars or for which conversion to another currency is
     required to satisfy the judgment of any court;

  -  impair the right to institute suit for the enforcement of any payment on
     any debt securities when due; or

  -  reduce the percentage in principal amount of debt securities of any series
     issued under the applicable indenture, the consent of the holders of which
     is required for any such modification.

EVENTS OF DEFAULT

In general, the indenture defines an event of default with respect to debt
securities of any series issued under the indenture as being:

     (a)  default in payment of any principal of the debt securities of such
     series, either at maturity, upon any redemption, by declaration or
     otherwise;

     (b)  default for 30 days in payment of any interest on any debt securities
     of such series unless otherwise provided;

     (c)  default for 90 days after written notice in the observance or
     performance of any covenant or warranty in the debt securities of such
     series or the indenture other than

     -  default in or breach of a covenant which is dealt with otherwise below,
        or

     -  if certain conditions are met, if the events of default described in
        this clause (c) are the result of changes in generally accepted
        accounting principles; or

     (d)  certain events of bankruptcy, insolvency or reorganization of us.

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In general, the indenture provides that if an event of default described in
clauses (a), (b) or (c) above occurs and does not affect all series of debt
securities then outstanding, the trustee or the holders of debt securities may
then declare the following amounts to be due and payable immediately:

  -  the entire principal of all debt securities of each series affected by the
     event of default; and

  -  the interest accrued on such principal.

Such a declaration by the holders requires the approval of at least 25 percent
in principal amount of the debt securities of each series issued under the
indenture and then outstanding, treated as one class, which are affected by the
event of default.

The indenture also generally provides that if a default described in clause (c)
above which is applicable to all series of debt securities then outstanding or
certain events of bankruptcy, insolvency and reorganization of us occur and are
continuing, the trustee or the holders of debt securities may declare the entire
principal of all such debt securities and interest accrued thereon to be due and
payable immediately. This declaration by the holders requires the approval of at
least 25 percent in principal amount of all debt securities issued under the
indenture and then outstanding, treated as one class. Upon certain conditions,
the holders of a majority in aggregate principal amount of the debt securities
of all such affected series then outstanding may annul such declarations and
waive the past defaults. However, the majority holders may not annul or waive a
continuing default in payment of principal of, premium, if any, or interest on
such debt securities.

The indenture provides that the holders of debt securities issued under the
indenture, treated as one class, will indemnify the trustee before the trustee
exercises any of its rights or powers under the indenture. This indemnification
is subject to the trustee's duty to act with the required standard of care
during a default. The holders of a majority in aggregate principal amount of the
outstanding debt securities of each series affected, treated as one class,
issued under the indenture may direct the time, method and place of:

  -  conducting any proceeding for any remedy available to the trustee, or

  -  exercising any trust or power conferred on the trustee.

This right of the holders of debt securities is, however, subject to the
provisions in the indenture providing for the indemnification of the trustee and
other specified limitations.

In general, the indenture provides that holders of debt securities issued under
the indenture may only institute an action against us under the indenture if the
following four conditions are fulfilled:

  -  the holder previously has given to the trustee written notice of default
     and the default continues;

  -  the holders of at least 25 percent in principal amount of the debt
     securities of each affected series (treated as one class) issued under the
     indenture and then outstanding have both (1) requested the trustee to
     institute such action and (2) offered the trustee reasonable indemnity;

  -  the trustee has not instituted such action within 60 days of receipt of
     such request; and

  -  the trustee has not received direction inconsistent with such written
     request by the holders of a majority in principal amount of the debt
     securities of each affected series (treated as one class) issued under the
     indenture and then outstanding.

The above four conditions do not apply to actions by holders of the debt
securities under the indenture against us for payment of principal or interest
on or after the due date provided. The indenture contains a covenant that we
will file annually with the trustee a certificate of no default or a certificate
specifying any default that exists.

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DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE

We can discharge or defease our obligations under the indenture as set forth
below.

Under terms satisfactory to the trustee, we may discharge certain obligations to
holders of any series of debt securities issued under the indenture which have
not already been delivered to the trustee for cancellation. Such debt securities
must also:

  -  have become due and payable;

  -  be due and payable by their terms within one year; or

  -  be scheduled for redemption by their terms within one year.

We may discharge any series of debt securities by irrevocably depositing an
amount certified to be sufficient to pay at maturity or upon redemption the
principal of and interest on such debt securities. We may make such deposit in
cash or, in the case of debt securities payable only in U.S. dollars, U.S.
Government Obligations, as defined in the indenture.

We may also, upon satisfaction of the conditions listed below, discharge certain
obligations to holders of any series of debt securities issued under the
indenture at any time ("Defeasance"). Under terms satisfactory to the trustee,
we may be released with respect to any outstanding series of debt securities
issued under the indenture from the obligations imposed by sections 3.6 and 9.1.
These sections contain the covenants described above limiting liens and
consolidations, mergers and conveyances of assets. Also under terms satisfactory
to the trustee, we may omit to comply with these sections without creating an
event of default ("Covenant Defeasance"). Defeasance or Covenant Defeasance may
be effected only if, among other things:

  -  we irrevocably deposit with the trustee cash or, in the case of debt
     securities payable only in U.S. dollars, U.S. Government Obligations as
     trust funds in an amount certified to be sufficient to pay at maturity or
     upon redemption the principal of and interest on all outstanding debt
     securities of such series issued under the indenture; and

  -  we deliver to the trustee an opinion of counsel to the effect that the
     holders of this series of debt securities will not recognize income, gain
     or loss for United States federal income tax purposes as a result of such
     Defeasance or Covenant Defeasance. Such opinion must further state that
     these holders will be subject to United States federal income tax on the
     same amounts, in the same manner and at the same times as would have been
     the case if Defeasance or Covenant Defeasance had not occurred. In the case
     of a Defeasance, this opinion must be based on a ruling of the Internal
     Revenue Service or a change in United States federal income tax law
     occurring after the date of the indenture, since this result would not
     occur under current tax law.

CONCERNING THE TRUSTEE

The trustee is one of a number of banks with which we and our subsidiaries
maintain ordinary banking relationships and with which we and our subsidiaries
maintain credit facilities.

GOVERNING LAW

The indenture, the new debentures and the new PATS are governed by, and
construed in accordance with, the laws of the State of New York.

DEFINED TERMS

Set forth below are some of the definitions of the defined terms used in this
prospectus in describing the new debentures and the new PATS.

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"Adjusted Treasury Rate" means, with respect to any redemption date for the new
debentures and any Post-Coupon Reset Redemption Date for the new PATS, as the
case may be:

  -  the yield, under the heading which represents the average for the
     immediately preceding week, appearing in the most recently published
     statistical release designated "H.15(519)" or any successor publication
     which is published weekly by the Board of Governors of the Federal Reserve
     System and which establishes yields on actively traded U.S. Treasury
     securities adjusted to constant maturity under the caption "Treasury
     Constant Maturities," for the maturity corresponding to the Optional
     Redemption Comparable Treasury Issue (if no maturity is within three months
     before or after the remaining term of the applicable securities, yields for
     the two published maturities most closely corresponding to the Optional
     Redemption Comparable Treasury Issue will be determined and the Adjusted
     Treasury Rate will be interpolated or extrapolated from such yields on a
     straight line basis, rounding to the nearest month); or

  -  if such release (or any successor release) is not published during the week
     preceding the calculation date or does not contain such yields, the rate
     per annum equal to the semiannual equivalent yield to maturity of the
     Optional Redemption Comparable Treasury Issue, calculated using a price for
     the Optional Redemption Comparable Treasury Issue (expressed as a
     percentage of its principal amount) equal to the Optional Redemption
     Comparable Treasury Price for such redemption date.

"Applicable Spread" means the lowest Fixed Rate Bid, expressed as a spread (in
the form of a percentage or in basis points) above the Base Rate for the new
PATS, obtained by the Calculation Agent by 3:30 p.m., New York City time, on the
Fixed Rate Determination Date, from the Fixed Rate Bids quoted to the
Calculation Agent by up to five Reference Corporate Dealers.

"Base Rate" means 5.66%.

"Business Day" means any day other than a Saturday or Sunday or a day on which
banking institutions in New York City are authorized or obligated by law or
executive order to close.

"Calculation Agent" means the Calculation Agent appointed pursuant to the
Indenture, initially UBS Warburg LLC.

"Call Notice" means notice by the Callholder to us and the trustee that it
elects to purchase the new PATS for remarketing on the Initial Coupon Reset
Date.

"Call Option" means the option of the Callholder which, if exercised, results in
the obligation of the Callholder to purchase the new PATS for remarketing on the
Initial Coupon Reset Date, and, if we exercise our Floating Period Option, to
purchase the securities of this series for remarketing on the Fixed Rate Coupon
Reset Date, as described under "Description of the New Securities--New
PATS--Call Option."

"Comparable Treasury Issues" for the new PATS means the U.S. Treasury security
or securities selected by the Calculation Agent, as of the first Determination
Date, as having an actual or interpolated maturity or maturities comparable to
the remaining term of the new PATS being purchased by the Callholder.

"Comparable Treasury Price" means, with respect to the Initial Coupon Reset
Date:

  -  the offer prices for the Comparable Treasury Issues (expressed, in each
     case, as a percentage of its principal amount) at 12:00 noon, New York City
     time, on the first Determination Date, as set forth on "Telerate Page 500"
     (or such other page as may replace "Telerate Page 500") or

  -  if such page (or any successor page) is not displayed or does not contain
     such offer prices on such Determination Date, the average of the Reference
     Treasury Dealer Quotations for such

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     Determination Date, after excluding the highest and lowest such Reference
     Treasury Dealer Quotations, or if the Calculation Agent obtains fewer than
     four such Reference Treasury Dealer Quotations, the average of all such
     Reference Treasury Dealer Quotations.

"Consolidated Funded Indebtedness" means the aggregate of all of our outstanding
Funded Indebtedness and the outstanding Funded Indebtedness of our consolidated
Subsidiaries, determined on a consolidated basis in accordance with generally
accepted accounting principles.

"Consolidated Net Tangible Assets" means the total assets appearing on our
consolidated balance sheet less, in general:

  -  intangible assets;

  -  current and accrued liabilities (other than Consolidated Funded
     Indebtedness and capitalized rentals or leases), deferred credits, deferred
     gains and deferred income;

  -  reserves;

  -  advances to finance oil or natural gas exploration and development to the
     extent that the indebtedness related thereto is excluded from Funded
     Indebtedness;

  -  an amount equal to the amount excluded from Funded Indebtedness
     representing the "production payment" financing of oil and gas exploration
     and development; and

  -  minority stockholder interests.

"Coupon Reset Date(s)" means (1) January 15, 2006, assuming the Callholder has
elected to purchase the new PATS and we have not elected to exercise our
Floating Period Option, or (2) January 15, 2006 and the Floating Period
Termination Date, if, in the case of the Floating Period Termination Date, we
have elected to exercise our Floating Period Option.

"Coupon Reset Rate" means the interest rate to be paid on the new PATS from and
including each Coupon Reset Date.

"Determination Date" means each of the Floating Rate Spread Determination Date
or Fixed Rate Determination Date.

"Dollar Price" means, with respect to the new PATS and as determined by the
Calculation Agent, (1) the principal amount of the new PATS, plus (2) the
premium equal to the excess, if any, of (A) the present value, as of the Initial
Coupon Reset Date, of the Remaining Scheduled Payments for such new PATS,
discounted to the Initial Coupon Reset Date on a semi-annual basis (assuming a
360-day year consisting of twelve 30-day months) at the Treasury Rate, over (B)
the principal amount of the new PATS.

"Fixed Rate Bid" means an irrevocable offer to purchase the aggregate
outstanding principal amount of the new PATS at the Dollar Price, but assuming:

  -  a settlement date that is the Fixed Rate Coupon Reset Date applicable to
     such new PATS;

  -  a maturity date that is the tenth anniversary of the Fixed Rate Coupon
     Reset Date; and

  -  a stated annual interest rate equal to the Base Rate plus the spread bid by
     the applicable Reference Corporate Dealer.

"Fixed Rate Coupon Reset Date" means January 15, 2006, assuming the Callholder
has elected to purchase the new PATS and we have not elected to exercise our
Floating Period Option, or the Floating Period Termination Date in the event
that we have elected to exercise our Floating Period Option.

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"Fixed Rate Determination Date" means the third Business Day prior to the Fixed
Rate Coupon Reset Date.

"Floating Period Interest Rate" means the sum of the Reference Rate and the
Floating Rate Spread.

"Floating Period Notification Date" means the fourth Business Day prior to the
Initial Coupon Reset Date.

"Floating Period Option" means our right, on any date after the Callholder
elects to purchase the new PATS but prior to the fourth Business Day prior to
the Initial Coupon Reset Date, to require the Callholder to remarket the new
PATS at the Floating Period Interest Rate.

"Floating Period Termination Date" means the earlier of January 15, 2007 or the
date which otherwise would be the first Reference Rate Reset Date following the
Floating Period Termination Notification Date.

"Floating Period Termination Notification Date" means the date on which we give
notice to the Callholder and the trustee of our election to terminate the
Floating Rate Period which shall be at least four Business Days prior to the
next Reference Rate Reset Date.

"Floating Rate Bid" means an irrevocable offer to purchase the aggregate
outstanding principal amount of the new PATS at the Dollar Price, but assuming:

  -  a settlement date that is the Floating Rate Coupon Reset Date;

  -  a maturity date equal to the Floating Period Termination Date;

  -  a stated annual interest rate equal to the Reference Rate plus the Floating
     Rate Spread;

  -  that the new PATS are subject to mandatory tender to and purchase by the
     Callholder at the Dollar Price on the Floating Period Termination Date; and

  -  that we will redeem the new PATS at the Dollar Price on the Floating Period
     Termination Date, if not previously purchased by the Callholder.

"Floating Rate Coupon Reset Date" means January 15, 2006 in the event we have
elected to exercise our Floating Period Option.

"Floating Rate Period" means the period from and including the Floating Rate
Coupon Reset Date to but excluding the Floating Period Termination Date.

"Floating Rate Reset Period" means the period from and including the first
Reference Rate Reset Date, to but excluding the next following Reference Rate
Reset Date, and thereafter the period from and including a Reference Rate Reset
Date to but excluding the next following Reference Rate Reset Date; provided
that the final Floating Rate Reset Period will run to but exclude the Floating
Period Termination Date.

"Floating Rate Spread" means the lowest Floating Rate Bid expressed as a spread
(in the form of a percentage or in basis points) above the Reference Rate for
the new PATS obtained by the Calculation Agent by 3:30 p.m., New York City time,
on the Floating Rate Spread Determination Date, from the Floating Rate Bids
quoted to the Calculation Agent by up to five Reference Money Market Dealers

"Floating Rate Spread Determination Date" means the third Business Day prior to
the Floating Rate Coupon Reset Date.

"Funded Indebtedness" means any indebtedness which matures more than one year
after the date the amount of Funded Indebtedness is being determined, less any
such indebtedness as will be retired by any deposit or payment required to be
made within one year from such date under any prepayment

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provision, sinking fund, purchase fund or otherwise. Funded Indebtedness does
not, however, include our indebtedness or the indebtedness of any of our
subsidiaries incurred to finance outstanding advances to others to finance oil
or natural gas exploration and development, to the extent that the latter are
not in default in their obligations to us or such subsidiary. Funded
Indebtedness also does not include our indebtedness or the indebtedness of any
of our subsidiaries incurred to finance oil or natural gas exploration and
development through what is commonly referred to as a "production payment" to
the extent that we or any of our subsidiaries have not guaranteed the repayment
of the production payment.

"Independent Investment Banker" means UBS Warburg LLC and any successor firm
selected by us, or if any such firm is unwilling or unable to serve as such, an
independent investment and banking institution of national standing appointed by
us.

"Initial Coupon Reset Date" means January 15, 2006.

"Interest Rate to Maturity" means the sum of the Base Rate and the Applicable
Spread, which will be based on the Dollar Price of the new PATS.

"London Business Day" means any day on which dealings in U.S. dollars are
transacted in the London Inter-Bank Market.

"Optional Redemption Reference Treasury Dealer" means each of up to five dealers
to be selected by us, and their respective successors; provided that if any of
the foregoing ceases to be, and has no affiliate that is, a Primary Treasury
Dealer, we will substitute for it another Primary Treasury Dealer.

"Optional Redemption Comparable Treasury Issue" means the U.S. Treasury security
selected by an Independent Investment Banker as having a maturity comparable to
the remaining term of the securities to be redeemed that would be utilized, at
the time of selection and in accordance with customary financial practice, in
pricing new issues of corporate debt securities of comparable maturity to the
remaining term of such securities or, if, in the reasonable judgment of the
Independent Investment Banker, there is no such security, then the Optional
Redemption Comparable Treasury Issue will mean the U.S. Treasury security or
securities selected by an Independent Investment Banker as having an actual or
interpolated maturity or maturities comparable to the remaining term of the
securities.

"Optional Redemption Comparable Treasury Price" means (1) the average of five
Optional Redemption Reference Treasury Dealer Quotations for the applicable
redemption date, after excluding the highest and lowest Optional Redemption
Reference Treasury Dealer Quotations, or (2) if the Independent Investment
Banker obtains fewer than five such Optional Redemption Reference Treasury
Dealer Quotations, the average of all such quotations.

"Optional Redemption Reference Treasury Dealer Quotations" means, with respect
to each Optional Redemption Reference Treasury Dealer and any redemption date
for the new debentures or any PostCoupon Reset Redemption Date, the average, as
determined by the Independent Investment Banker of the bid and asked prices for
the Optional Redemption Comparable Treasury Issue (expressed in each case as a
percentage of its principal amount) quoted in writing to the Independent
Investment Banker and the trustee at 5:00 p.m., New York City time, on the third
Business Day preceding such redemption date.

"Post-Coupon Reset Redemption Date" means any date after the Fixed Rate Coupon
Reset Date on which we elect to redeem the new PATS, in whole or in part.

"Put Option" means the obligation of the trustee to put the new PATS to us as
described under "Description of the New Securities--New PATS--Put Option."

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"Reference Corporate Dealer" means each of up to five leading dealers of
publicly traded debt securities, including our debt securities, which shall be
selected by us and agreed to by the Callholder, such consent not to be
unreasonably withheld. We will advise the Calculation Agent of our selection of
Reference Corporate Dealers no later than five Business Days prior to the Fixed
Rate Coupon Reset Date. One of the Reference Corporate Dealers we select will be
UBS Warburg LLC, if UBS AG, London Branch is then the Callholder.

"Reference Money Market Dealer" means each of up to five leading dealers of
publicly traded debt securities, including our debt securities, which we shall
select, who are also leading dealers in money market instruments, and agreed to
by the Callholder, such consent not to be unreasonably withheld. We will advise
the Calculation Agent of our selection of Reference Money Market Dealers no
later than five Business Days prior to the Floating Rate Coupon Reset Date. One
of the Reference Money Market Dealers we select will be UBS Warburg LLC, if UBS
AG, London Branch is then the Callholder.

"Reference Rate" means:

  -  The rate for each Floating Rate Reset Period which will be the rate for
     deposits in U.S. dollars for a period of one month which appears on the
     Telerate Page 3750 (or any successor page) as of 11:00 a.m., London time,
     on the applicable Reference Rate Determination Date.

  -  If no rate appears on Telerate Page 3750 on the Reference Rate
     Determination Date, the Calculation Agent will request the principal London
     offices of four major reference banks in the London Inter-Bank Market, to
     provide the Calculation Agent, in the case of each such bank, with its
     offered quotation for deposits in U.S. dollars for the period of one month,
     commencing on the first day of the Floating Rate Reset Period, to prime
     banks in the London Inter-Bank Market at approximately 11:00 a.m., London
     time, on that Reference Rate Determination Date and in a principal amount
     that is representative for a single transaction in U.S. dollars in that
     market at that time. If at least two quotations are provided, then the
     Reference Rate will be the average of those quotations. If fewer than two
     quotations are provided, then the Reference Rate will be the average
     (rounded, if necessary, to the nearest one hundredth of a percent) of the
     rates quoted at approximately 11:00 a.m., New York City time, on the
     Reference Rate Determination Date by three major banks in New York City
     selected by the Calculation Agent for loans in U.S. dollars to leading
     European banks, having a one-month maturity and in a principal amount that
     is representative for a single transaction in U.S. dollars in that market
     at that time. If the banks selected by the Calculation Agent are not
     providing quotations in the manner described in this paragraph, the rate
     for the Floating Rate Reset Period following the Reference Rate
     Determination Date will be the rate in effect on that Reference Rate
     Determination Date.

"Reference Rate Determination Date" will be the second London Business Day
preceding each Reference Rate Reset Date.

"Reference Rate Reset Date" means January 15, 2006 and the 15th day of each
month thereafter until, but excluding, the Floating Period Termination Date.

"Reference Treasury Dealer" means each of up to five dealers to be selected by
us, and their respective successors; provided that if any of the foregoing
ceases to be, and has no affiliate that is, a primary U.S. Government securities
dealer (a "Primary Treasury Dealer") we will substitute for it another Primary
Treasury Dealer. One of the Reference Treasury Dealers we select will be UBS
Warburg LLC, if UBS AG, London Branch is then the Callholder.

"Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer, the offer prices for the Comparable Treasury Issues (expressed
in each case as a percentage of its principal

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amount) quoted in writing to the Calculation Agent by such Reference Treasury
Dealer, by 12:00 noon, New York City time, on the first Determination Date.

"Remaining Scheduled Payments" means, with respect to the 6.75% PATS, the
remaining scheduled payments of the principal and interest thereon, calculated
at the Base Rate applicable to such new PATS, that would be due from but
excluding the Initial Coupon Reset Date to and including the maturity date.

"Subsidiary," as used under "Description of the New Securities," means a
corporation to which we, or any of our subsidiaries, owns at least a majority of
the outstanding securities which have voting power.

"Telerate Page 500" means the display designated as "Telerate Page 500" on Dow
Jones Markets (or such other page as may replace "Telerate Page 500" on such
service) or such other service displaying the offer prices for the Comparable
Treasury Issues, as may replace Dow Jones Markets.

"Telerate Page 3750" means the display page so designated on the Dow Jones
Market Limited (or such other page as may replace that page on that service) or
such other service or services as may be nominated by the British Bankers'
Association for the purpose of displaying London interbank offered rates for
U.S. dollars deposits.

"Treasury Rate" for the new PATS means, with respect to the Initial Coupon Reset
Date, the rate per annum equal to the semi-annual equivalent yield to maturity
or interpolated (on a day count basis) yield to maturity of the Comparable
Treasury Issues, assuming a price for the Comparable Treasury Issues (expressed
as a percentage of their principal amounts) equal to the Comparable Treasury
Price for such Coupon Reset Date.

BOOK-ENTRY ONLY ISSUANCE--THE DEPOSITORY TRUST COMPANY

The new debentures and new PATS will be evidenced by one or more certificates in
registered global form, which will be deposited with, or on behalf of, The
Depository Trust Company (DTC) in New York, New York and registered in the name
of Cede & Co., DTC's nominee. Except as set forth below, a global note may be
transferred, in whole or in part, only to another nominee of DTC or to a
successor to DTC or its nominee.

DEPOSITARY PROCEDURES

DTC has advised us that it is a:

  -  limited-purpose trust company organized under the laws of the State of New
     York;

  -  banking organization within the meaning of the laws of the State of New
     York;

  -  member of the Federal Reserve System;

  -  clearing corporation within the meaning of the New York Uniform Commercial
     Code; and

  -  clearing agency registered pursuant to the provisions Section 17A of the
     Securities Exchange Act.

DTC was created to hold securities of its participants and to facilitate the
clearance and settlement of securities transactions among its participants
through electronic book-entry changes in their accounts, thereby eliminating the
need for physical movement of securities certificates. DTC's participants
include securities brokers and dealers, banks, trust companies, clearing
corporations and other organizations. Banks, brokers, dealers and trust
companies that clear through or maintain a custodial relationship with a
participant also have access to DTC's book-entry system.

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Holders of new debentures and new PATS may hold their beneficial interests in
the securities directly as a participant in DTC or indirectly through
organizations that are participants in DTC.

Upon deposit of the global notes with DTC, DTC will credit, on its book-entry
registration and transfer system, the accounts of those participants designated
by the Exchange Agent with the principal amounts of the global notes held by or
through the participants. The record of DTC will show ownership and effect the
transfer of ownership of the global notes by its participants. The records of
the participants will show ownership and effect the transfer of ownership of the
global notes by persons holding beneficial interests in the global notes through
them. In the case of beneficial interests held by or though participants in
Euroclear or Cedel, DTC will credit the accounts of Morgan Guaranty Trust
Company of New York, Brussels office, and Citibank, N.A. with the principal
amounts of the global notes beneficially owned by or through Euroclear and
Cedel, respectively. These records of DTC will show ownership and effect the
transfer of ownership of the global notes by Morgan Guaranty and Citibank. The
records of Morgan Guaranty and Citibank will show ownership and effect the
transfer of ownership of the global notes by Euroclear and Cedel, respectively.
The records of Euroclear and Cedel will show ownership and effect the transfer
of ownership of the global notes by their participants. The records of the
participants will show ownership or transfer of ownership of the global notes by
persons holding through them.

So long as DTC or its nominee is the registered owner of the global notes, it
will be considered the sole owner and holder of the securities for all purposes
under the applicable indenture. Except as set forth below, if you own a
beneficial interest in global notes, you will not:

  -  be entitled to have the securities registered in your name;

  -  receive or be entitled to receive physical delivery of a certificate in
     definitive form representing the securities; or

  -  be considered the owner or holder of the securities under the applicable
     indenture for any purpose, including with respect to the giving of any
     directions, approvals or instructions to the trustee.

Therefore, if you are required by state law to take physical delivery of the
securities in definitive form, you may not be able to own, transfer or pledge
beneficial interests in the global notes. In addition, the lack of a physical
certificate evidencing your beneficial interests in the global notes may limit
your ability to pledge the interests to a person or entity that is not a
participant in DTC.

If you own beneficial interests in a global note, you will have to rely on the
procedures of DTC and, if you are not a participant in DTC, the procedures of
the participant through which you hold your beneficial interests, to exercise
your rights as a holder under the applicable indenture. DTC has advised us that
it will take any action permitted to be taken by a holder of beneficial
interests in the global notes only at the direction of one or more of the
participants to whose accounts the interests are credited. We understand that,
under existing industry practice, when a beneficial owner of a global note wants
to give any notice or take any action that a registered holder is entitled to
take, at our request or under the applicable indenture, DTC will authorize the
participant to give the notice or take the action, and the participant will
authorize its beneficial owners to give the notice or take the action.
Accordingly, we and the trustee will treat as a holder anyone designated as such
in writing by DTC for purposes of obtaining any consents or directions required
under the applicable indenture.

We will pay the principal of, and interest on, the global notes through the
trustee or paying agent to DTC or its nominee, as the registered holder of the
global notes, in immediately available funds. We expect DTC or its nominee, upon
receipt of any payments, to immediately credit each participant's account with
payments in amounts proportionate to that participant's beneficial interest as
shown on the records of DTC or its nominee. We also expect each participant to
pay each owner of beneficial

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interests in the global notes held through that participant in accordance with
standing customer instructions and customary practices. These payments will be
the sole responsibility of the participants.

We will not, and the trustee and paying agent will not, assume any
responsibility or liability for any aspect of the records relating to, payments
made on account of or actions taken with respect to the beneficial ownership
interests in global notes, or for any other aspect of the relationship between
DTC and its participants, Euroclear or Cedel and their participants, or between
the participants and the owners of beneficial interests. We, the trustee and the
paying agent may conclusively rely on instructions from DTC for all purposes. We
obtained the above information about DTC, Euroclear and Cedel and their
book-entry systems from sources we believe are reliable, but we take no
responsibility for the accuracy of the information.

SETTLEMENT PROCEDURES

Secondary market trading between DTC participants will occur in the ordinary way
in accordance with DTC's rules and procedures and will be settled in immediately
available funds using DTC's Same-Day Funds Settlement System.

Secondary market trading between participants of Euroclear and/or Cedel will
occur in the ordinary way in accordance with each of its rules and procedures
and will be settled using the procedures applicable to conventional Eurobonds in
immediately available funds. Morgan Guaranty or Citibank will effect transfers
in global notes between DTC participants, on the one hand, and Euroclear or
Cedel participants, on the other hand, in accordance with DTC's procedures and
will settle them in same-day funds. Morgan Guaranty or Citibank, as the case may
be, must deliver instructions to Euroclear or Cedel in accordance with
Euroclear's or Cedel's procedures. If the transfer meets its settlement
requirements, Euroclear or Cedel will instruct Morgan Guaranty or Citibank to
effect final settlement on its behalf by delivering or receiving interests in
the global notes in its accounts with DTC and making or receiving payment in
accordance with normal procedures of same-day funds settlement applicable to
DTC. Participants in Cedel and Euroclear may not deliver instructions directly
to Morgan Guaranty or Citibank, as applicable.

Because of time zone differences, the accounts of Euroclear and Cedel
participants purchasing beneficial interests in the global notes from DTC
participants will be credited with the securities purchased, and the crediting
will be reported to the Euroclear and Cedel participants, on the securities
settlement processing day immediately following the DTC settlement processing
day. Likewise, the accounts of Euroclear and Cedel participants selling
beneficial interests in the global notes to DTC participants will be credited
with the cash received on the DTC settlement processing day, but the cash will
not be available until the settlement processing day immediately following the
DTC settlement processing day.

Although DTC, Euroclear and Cedel have agreed to the procedures to facilitate
transfers of interests in the global notes among participants in DTC, Euroclear
and Cedel, they are under no obligation to perform or to continue to perform
these procedures. These procedures may be changed or discontinued at any time.
We take no responsibility for the performance by DTC, Euroclear or Cedel or
their respective participants of their respective obligations under the rules
and procedures governing their operations.

EXCHANGE OF GLOBAL NOTES FOR CERTIFICATED NOTES

We will exchange beneficial interests in global notes for certificated notes
only if:

  -  DTC notifies us that it is unwilling or unable to continue as depositary
     for the global notes;

  -  DTC ceases to be a clearing agency registered under the Securities Exchange
     Act; or

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  -  except in the case of the new PATS, we decide at any time not to have the
     securities represented by global notes and so notify the trustee.

If there is an exchange, we will issue certificated notes in authorized
denominations and registered in the names which DTC directs.

UNITED STATES FEDERAL TAX CONSIDERATIONS

The following is a discussion of the material U.S. federal income tax
consequences of the ownership and disposition of new debentures and new PATS and
as to legal conclusions included in the discussion represents the opinion of our
counsel, Andrews & Kurth LLP. This discussion is based upon the Internal Revenue
Code of 1986, as amended, existing and proposed Treasury regulations, Internal
Revenue Service rulings and pronouncements and administrative and judicial
decisions currently in effect, all of which are subject to change (possibly with
retroactive effect) or possible differing interpretations. This discussion deals
only with new debentures and new PATS held as "capital assets" as defined in the
Internal Revenue Code and does not purport to deal with persons in special tax
situations, such as financial institutions, insurance companies, regulated
investment companies, real estate investment trusts, dealers in securities or
currencies, persons holding new debentures or new PATS as a hedge against
currency risk or as a position in a "straddle," or "conversion" transaction, or
persons whose functional currency is not the U.S. dollar. Moreover, this
discussion does not address the new debentures or new PATS held by a foreign
partnership or other flow-through entities.

The term "U.S. Holder" means a beneficial owner of new debentures or new PATS
that is for U.S. federal income tax purposes, (i) a citizen or resident of the
United States, (ii) a corporation, partnership or other entity created or
organized in or under the laws of the United States or of any political
subdivision thereof (other than a partnership that is not treated as a U.S.
person under any applicable Treasury regulations), (iii) an estate the income of
which is subject to U.S. federal income tax regardless of its source, or (iv) a
trust if a court within the United States is able to exercise primary
supervision over the administration of the trust and one or more U.S. persons
have the authority to control all substantial decisions of the trust. As used
herein, the term "non-U.S. Holder" means a beneficial owner of the new
debentures or the new PATS that is not a U.S. Holder.

PROSPECTIVE INVESTORS SHOULD CONSULT THEIR OWN TAX ADVISORS CONCERNING THE
APPLICATIONS OF U.S. FEDERAL INCOME TAX LAWS TO THEIR PARTICULAR SITUATIONS AS
WELL AS ANY CONSEQUENCES OF THE ACQUISITION, OWNERSHIP AND DISPOSITION OF THE
NEW DEBENTURES OR THE NEW PATS ARISING UNDER THE LAWS OF ANY OTHER TAXING
JURISDICTION.

EXPECTED TAX TREATMENT OF U.S. HOLDERS

The exchange offer through which outstanding debentures may be exchanged for the
new debentures and outstanding PATS may be exchanged for the new PATS, should
not produce, for federal income tax purposes, recognizable gain or loss to
either us or a U.S. Holder. A U.S. Holder will have an initial adjusted tax
basis and holding period in the new debenture and new PATS equal to the adjusted
tax basis and holding period in the outstanding debenture and outstanding PATS,
respectively.

Although there are no cases or rulings with respect to instruments with terms
similar to those of the new PATS, and the matter is not free from doubt, the new
PATS should be treated as fixed rate debt instruments that mature on the Initial
Coupon Reset Date. By acquiring the new PATS, a holder agrees (in the absence of
an administrative determination or judicial ruling to the contrary) to follow
such treatment for U.S. federal income tax purposes. No ruling on any of the
issues relating to the new PATS will be sought from the IRS and no assurance can
be given that the IRS or the courts will agree with the characterization
described above.

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The outstanding debentures and outstanding PATS were not issued with "original
issue discount" for U.S. federal income tax purposes. Interest on the new
debentures and the new PATS should therefore constitute "qualified stated
interest" and generally should be taxable to a U.S. Holder as ordinary interest
income at the time such payments are accrued or received, in accordance with the
U.S. Holder's regular method of tax accounting.

Upon the sale, exchange or retirement of new debentures or new PATS, a U.S.
Holder generally will recognize taxable gain or loss equal to the difference
between the amount realized on the sale, exchange or retirement (other than
amounts representing accrued and unpaid interest) and the U.S. Holder's adjusted
tax basis in the new debentures or the new PATS. A U.S. Holder's initial
adjusted tax basis in the new debentures or the new PATS generally will be
increased by any original issue discount included in income and decreased by the
amount of any payments, other than qualified stated interest payments, received
with respect to the new debentures or the new PATS. That gain or loss will
generally be capital gain or loss and will be long-term capital gain or loss if
the holding period in the new debentures or the new PATS is more than one year
on the date of disposition.

POSSIBLE ALTERNATIVE TAX TREATMENT OF THE NEW PATS

There can be no assurance that the IRS will agree with our treatment of the new
PATS, and it is possible that the IRS could assert another treatment. For
instance, it is possible that the IRS could seek to treat the new PATS as
maturing on their stated maturity date (or one year after that date, due to the
possibility of extension). In the event the new PATS were treated as maturing on
their stated maturity date for U.S. federal income tax purposes, the new PATS
would be treated as having contingent interest under the Internal Revenue Code.
In such event, under Treasury regulations governing debt instruments that
provide for contingent payments, the amount treated as taxable interest in each
accounting period would be a hypothetical amount based upon our current
borrowing costs for comparable, noncontingent debt instruments. The hypothetical
amount would not necessarily be the same as the stated interest actually paid on
the new PATS. As a result, a U.S. Holder might be required to include interest
in income in excess of actual cash payments received for certain taxable years.
Also, the character of any gain or loss upon the sale or exchange of the new
PATS (including a sale pursuant to the mandatory tender on the Coupon Reset
Date) by a U.S. Holder will likely differ if the new PATS were treated as
contingent payment obligations. Any such taxable gain generally would be treated
as ordinary income. Any such taxable loss generally would be ordinary to the
extent of the U.S. Holder's ordinary income inclusions with respect to the new
PATS, and any excess would generally be treated as capital loss.

NON-U.S. HOLDERS

A non-U.S. Holder generally will not be subject to U.S. federal income or
withholding tax on interest paid on the new debentures or new PATS so long as
that interest is not effectively connected with its conduct of a trade or
business within the U.S., and the non-U.S. Holder:

  -  does not actually or constructively own 10% or more of the total combined
     voting power of all classes of our stock entitled to vote;

  -  is not a "controlled foreign corporation" with respect to which we are a
     "related person" within the meaning of the Code; and

  -  either (A) certifies to the applicable payor or its agent, under penalties
     of perjury, that it is not a United States person and provides its name and
     address on an IRS Form W-8BEN (or a suitable substitute form), or (B) a
     securities clearing organization, bank or other financial institution that
     holds customers' securities in the ordinary course of its trade or business
     (a "financial institution") and holds the new debenture or new PATS,
     certifies under penalties of perjury that

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     an IRS Form W-8BEN (or a suitable substitute form) has been received from
     the beneficial owner by it or by a financial institution between it and the
     beneficial owner and furnishes the payor with a copy thereof.

If these conditions are not satisfied, then interest paid on the new debentures
or new PATS will be subject to U.S. federal income and withholding tax at a rate
of 30% unless that rate is reduced or eliminated pursuant to an applicable tax
treaty.

Any gain or income realized by non-U.S. Holders upon the sale, exchange,
retirement or other disposition of the new debentures or the new PATS generally
will not be subject to U.S. federal income tax unless (i) that gain or income is
effectively connected with the conduct of a trade or business in the United
States by the non-U.S. Holder or (ii) in the case of a non-U.S. Holder who is an
individual, such individual is present in the United States for 183 days or more
in the taxable year of such sale, exchange, retirement or other disposition, and
certain other conditions are met.

If a non-U.S. Holder is engaged in a trade or business in the United States or
in the case of an individual non-U.S. Holder, is present in the United States
for 183 days or more, the non-U.S. Holder will be exempt from the withholding
tax previously discussed if it provides us with a properly completed and
executed Form W-8 ECI, but generally will be subject to U.S. income tax at
regular rates on interest and on any gain realized on the sale, exchange,
retirement or other disposition of the new debentures or the new PATS. In
addition, if a non-U.S. Holder is a foreign corporation, it may be subject to a
branch profits tax equal to 30% (or such lower rate provided by an applicable
treaty) of its effectively connected earnings and profits for the taxable year,
subject to certain adjustments.

New debentures or new PATS beneficially owned by an individual who at the time
of death is not a U.S. citizen or resident will not be subject to the U.S.
federal estate tax as a result of the individual's death, provided that the
individual does not constructively own 10% or more of the total combined voting
power of all classes of our stock entitled to vote and provided that the
interest payments with respect to the new debentures or new PATS would not have
been, if received at the time of the individual's death, effectively connected
with the conduct of a U.S. trade or business by the individual.

INFORMATION REPORTING AND BACKUP WITHHOLDING

U.S. Holders.  Information reporting will apply to payments of interest on, or
the proceeds of the sale or other disposition of, the new debentures and new
PATS with respect to certain noncorporate U.S. Holders, and backup withholding
at a rate of 31% may apply unless the recipient of such payment supplies a
taxpayer identification number, certified under penalties of perjury, as well as
certain other information or otherwise establishes an exemption from backup
withholding. Any amount withheld under the backup withholding rules is allowable
as a credit against the U.S. Holder's federal income tax, provided the required
information is provided to the IRS.

Non-U.S. Holders.  Backup withholding and information reporting will not apply
to payments of principal on the new debentures or new PATS by us or any of our
agents to a non-U.S. Holder if the non-U.S. Holder certifies at to its non-U.S.
Holder status under penalties of perjury or otherwise establishes an exemption
(provided that neither we nor our agent has actual knowledge that the holder is
a United States person or that the conditions of any other exemptions are not in
fact satisfied).

The payment of the proceeds of the disposition of new debentures and new PATS to
or through the United States office of a United States or foreign broker will be
subject to information reporting and backup withholding unless the owner
provides the certification described above or otherwise establishes an
exemption. The proceeds of a disposition effected outside the United States by a
non-U.S. Holder of new debentures or new PATS to or through a foreign office of
a broker generally will not be subject to backup withholding or information
reporting. However, if such broker is a

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United States person, a controlled foreign corporation for United States tax
purposes, a foreign person 50% or more of whose gross income from all sources
for certain periods is effectively connected with a trade or business in the
United States, or a foreign partnership that is engaged in the conduct of a
trade or business in the United States or that has one or more partners that are
United States persons who in the aggregate hold more than 50 percent of the
income or capital interests in the partnership, information reporting
requirements will apply unless such broker has documentary evidence in its files
of the holder's non-U.S. status and has no actual knowledge to the contrary or
unless the holder otherwise establishes an exemption. Any amount withheld under
the backup withholding rules will be refunded or is allowable as a credit
against the non-U.S. Holder's federal income tax liability, if any, provided the
required information or appropriate claim for refund is provided to the IRS.

PLAN OF DISTRIBUTION

Based on interpretations by the staff of the SEC in no-action letters issued to
third parties, we believe that you may transfer new debentures and new PATS
issued under the exchange offer in exchange for the outstanding debentures and
outstanding PATS if:

  -  you acquire the new debentures or new PATS in the ordinary course of your
     business; and

  -  you are not engaged in, and do not intend to engage in, and have no
     arrangement or understanding with any person to participate in, a
     distribution of such new debentures or new PATS.

Broker-dealers receiving new debentures or new PATS in the exchange offer will
be subject to a prospectus delivery requirement with respect to resales of the
new debentures and new PATS.

We believe that you may not transfer new debentures or new PATS issued under the
exchange offer in exchange for the outstanding debentures or outstanding PATS if
you are:

  -  our "affiliate" within the meaning of Rule 405 under the Securities Act;

  -  a broker-dealer that acquired outstanding debentures or outstanding PATS
     directly from us; or

  -  a broker-dealer that acquired outstanding debentures or outstanding PATS as
     a result of market-making or other trading activities without compliance
     with the registration and prospectus delivery provisions of the Securities
     Act.

To date, the staff of the SEC has taken the position that participating
broker-dealers may fulfill their prospectus delivery requirements with respect
to transactions involving an exchange of securities such as this exchange offer,
other than a resale of an unsold allotment from the original sale of the
outstanding debentures or outstanding PATS, with the prospectus contained in the
exchange offer registration statement. In the registration rights agreements, we
have agreed to permit participating broker-dealers to use this prospectus in
connection with the resale of new debentures and new PATS.

If you wish to exchange your outstanding debentures for new debentures or your
outstanding PATS for new PATS in the exchange offer, you will be required to
make representations to us as described in "The Exchange Offer--Exchange Terms"
and "--Procedures for Tendering Outstanding Securities--Other Matters" in this
prospectus and in the letter of transmittal. In addition, if you are a broker-
dealer who receives new debentures or new PATS for your own account in exchange
for outstanding debentures or outstanding PATS that were acquired by you as a
result of market-making activities or other trading activities, you will be
required to acknowledge that you will deliver a prospectus in connection with
any resale by you of such new debentures or new PATS. See "The Exchange Offer--
Resale of New Securities."

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We will not receive any proceeds from any sale of new debentures or new PATS by
broker-dealers. Broker-dealers who receive new debentures or new PATS for their
own account in the exchange offer may sell them from time to time in one or more
transactions in the over-the-counter market:

  -  in negotiated transactions;

  -  through the writing of options on the new debentures or new PATS or a
     combination of such methods of resale;

  -  at market prices prevailing at the time of resale; and

  -  at prices related to such prevailing market prices or negotiated prices.

Any resale may be made directly to purchasers or to or through brokers or
dealers who may receive compensation in the form of commissions or concessions
from any broker-dealer or the purchasers of any new debentures or new PATS. Any
broker-dealer that resells new debentures or new PATS it received for its own
account in the exchange offer and any broker or dealer that participates in a
distribution of such new debentures or new PATS may be deemed to be an
"underwriter" within the meaning of the Securities Act. Any profit on any resale
of new debentures or new PATS and any commissions or concessions received by any
such persons may be deemed to be underwriting compensation under the Securities
Act. The letter of transmittal states that by acknowledging that it will deliver
and by delivering a prospectus, a broker-dealer will not be deemed to admit that
it is an "underwriter" within the meaning of the Securities Act.

We have agreed to pay all expenses incidental to the exchange offer other than
commissions and concessions of any brokers or dealers. We will indemnify holders
of the outstanding debentures and outstanding PATS, including any
broker-dealers, against certain liabilities, including liabilities under the
Securities Act, as provided in the registration rights agreement.

FORWARD-LOOKING STATEMENTS

Certain matters discussed in this prospectus, excluding historical information,
include forward-looking statements--statements that discuss our expected future
results based on current and pending business operations. We make these
forward-looking statements in reliance on the safe harbor protections provided
under the Private Securities Litigation Reform Act of 1995. Forward-looking
statements can be identified by words such as "anticipates," "believes,"
"expects," "planned," "scheduled" or similar expressions. Although we believe
these forward-looking statements are based on reasonable assumptions, statements
made regarding future results are subject to numerous assumptions, uncertainties
and risks that may cause future results to be materially different from the
results stated or implied in this prospectus. The following are important
factors that could cause actual results to differ materially from any results
projected, forecasted, estimated or budgeted:

  -  Changes in general economic conditions in the United States;

  -  Changes in state or federal laws and regulations to which we are subject,
     including tax, environmental and employment laws and regulations;

  -  The cost and effects of legal and administrative claims and proceedings
     against Williams or its subsidiaries;

  -  Conditions of the capital markets we utilize to access capital to finance
     operations;

  -  The ability to raise capital in a cost-effective way;

  -  The effect of changes in accounting policies;

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  -  The ability to manage rapid growth;

  -  The ability to control costs;

  -  The ability of each business unit to successfully implement key systems,
     such as order entry systems and service delivery systems;


  -  Changes in foreign economies, currencies, laws and regulations, and
     political climates, especially in Canada, Argentina, Brazil, Venezuela and
     Lithuania, where we have made direct investments;


  -  The impact of future federal and state regulations of business activities,
     including allowed rates of return, the pace of deregulation in retail
     natural gas and electricity markets, and the resolution of other regulatory
     matters discussed herein;

  -  Fluctuating energy commodity prices;

  -  The ability of our energy businesses to develop expanded markets and
     product offerings as well as their ability to maintain existing markets;

  -  The ability of both the gas pipeline business unit and the energy services
     business unit to obtain governmental regulatory approval of various
     expansion projects;

  -  The ability of customers of the energy marketing and trading business to
     obtain governmental and regulatory approval of various projects, including
     power generation projects;

  -  Future utilization of pipeline capacity, which can depend on energy prices,
     competition from other pipelines and alternative fuels, the general level
     of natural gas and petroleum product demand, decisions by customers not to
     renew expiring natural gas transportation contracts, and weather
     conditions;

  -  The accuracy of estimated hydrocarbon reserves and seismic data;


  -  The ability to successfully integrate any newly acquired businesses.


LEGAL MATTERS

Andrews & Kurth L.L.P. will pass upon certain legal matters with respect to the
new debentures and new PATS.

EXPERTS


Ernst & Young LLP, independent auditors, have audited our consolidated financial
statements and schedules as of December 31, 2000 and 1999 and for each of the
three years in the period ended December 31, 2000, as set forth in our Current
Report on Form 8-K filed May 22, 2001, as set forth in their report, which is
incorporated by reference in this prospectus. Our consolidated financial
statements and schedules are incorporated by reference in reliance on Ernst &
Young LLP's report, given on their authority as experts in accounting and
auditing.


Our consolidated financial statements and schedules included in or incorporated
by reference in any documents filed pursuant to Section 13, 14, or 15(d) of the
Exchange Act after the date of this prospectus and prior to the termination of
the offering will be so included or incorporated by reference in reliance upon
the reports of independent auditors pertaining to such financial statements (to
the extent covered by consents filed with the Commission) given on the authority
of such independent auditors as experts in accounting and auditing.

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WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and special reports, proxy statements and other
information with the SEC under the Exchange Act. The registration statement of
which this prospectus forms a part and these reports, proxy statements and other
information can be inspected and copied at the public reference room maintained
by the SEC at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549, and at the SEC's regional offices at 500 West Madison Street, Suite
1400, Chicago, Illinois 60661 and at Seven World Trade Center, Suite 1300, New
York, New York 10048. Copies of these materials may also be obtained from the
SEC at prescribed rates by writing to the public reference room maintained by
the SEC at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C.
20549. You may obtain information on the operation of the public reference room
by calling the SEC at 1-800-SEC-0330.

We have filed with the SEC a registration statement on Form S-4 under the
Securities Act with respect to this offering. This prospectus, which forms a
part of the registration statement, does not contain all the information
included in the registration statement and the attached exhibits.

The SEC maintains a World Wide Web site on the Internet at http://www.sec.gov
that contains reports, proxy and information statements and other information
regarding us. The reports, proxy and information statements and other
information about us can be downloaded from the SEC's website and can also be
inspected and copied at the offices of the New York Stock Exchange, Inc., 20
Broad Street, New York, New York 10005.

INCORPORATION OF DOCUMENTS BY REFERENCE

The SEC allows us to "incorporate by reference" into this prospectus the
information we file with it, which means that we can disclose important
information to you by referring you to those documents. The information
incorporated by reference is considered to be part of this prospectus, and later
information that we file with the SEC will automatically update and supersede
this information. We incorporate by reference the documents listed below and any
future filings made with the SEC under section 13(a), 13(c), 14 or 15(d) of the
Exchange Act until the exchange offer is completed:


  -  our annual report on Form 10-K for the year ended December 31, 2000
     (certain financial information in which has been updated in our current
     report on Form 8-K filed May 22, 2001);



  -  our quarterly report on Form 10-Q for the quarter ended March 31, 2001,
     filed May 15, 2001; and



  -  our current reports on Form 8-K filed January 5, 2001, January 31, 2001,
     February 8, 2001, March 16, 2001, March 19, 2001, April 2, 2001, April 12,
     2001, April 27, 2001, May 1, 2001, May 3, 2001, May 7, 2001 and May 22,
     2001.



You may request a copy of these filings, at no cost, by writing or calling us at
the following address:


                               Investor Relations
                          The Williams Companies, Inc.
                              One Williams Center
                             Tulsa, Oklahoma 74172
                           Telephone: (918) 573-2000

You should rely only on the information incorporated by reference or provided in
this prospectus. We have not authorized anyone else to provide you with any
information. You should not assume that the information in this document is
current as of any date other than the date on the front page of this prospectus.

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PART II

INFORMATION NOT REQUIRED IN THE PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

The Company is empowered by Section 145 of the General Corporation Law of
Delaware, subject to the procedures and limitations stated therein, to indemnify
any person against expenses (including attorneys' fees), judgments, fines and
amounts paid in settlement actually and reasonably incurred by such person in
connection with any threatened, pending or completed action, suit or proceeding
in which such person is made a party by reason of such person being or having
been a director, officer, employee or agent of the Company. The statute provides
that indemnification pursuant to its provisions is not exclusive of other rights
of indemnification to which a person may be entitled under any by-law,
agreement, vote of stockholders or disinterested directors, or otherwise. The
By-laws of the Company provide for indemnification by the Company of its
directors and officers to the fullest extent permitted by the General
Corporation Law of Delaware. In addition, the Company has entered into indemnity
agreements with its directors and certain officers providing for, among other
things, the indemnification of and the advancing of expenses to such individuals
to the fullest extent permitted by law, and, to the extent insurance is
maintained, for the continued coverage of such individuals.

Policies of insurance are maintained by the Company under which the directors
and officers of the Company are insured, within the limits and subject to the
limitations of the policies, against certain expenses in connection with the
defense of actions, suits or proceedings, and certain liabilities which might be
imposed as a result of such actions, suits or proceedings, to which they are
parties by reason of being or having been such directors or officers.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Exhibits

The following instruments and documents are included as Exhibits to this
Registration Statement.




EXHIBIT
NUMBER                              EXHIBIT
----------------------------------------------------------------------
       
   *3.1   Restated Certificate of Incorporation, as supplemented
          (filed as Exhibit (3)(I)(a) to the Annual Report on Form
          10-K for the year ended December 31, 2000).
   *3.2   Restated Bylaws (filed as Exhibit 99.1 to Form 8-K filed
          January 19, 2000).
   *4.1   Form of Senior Debt Indenture between the registrant and
          Bank One Trust Company, N.A. (formerly The First National
          Bank of Chicago), as Trustee, (filed as Exhibit 4.1 to the
          Registration Statement on Form S-3 filed September 8, 1997).
   *4.2   Fourth Supplemental Indenture, dated as of January 17, 2001,
          between the registrant and Bank One Trust Company, N.A.
          (filed as Exhibit 4(j) to the Annual Report on Form 10-K for
          the year ended December 31, 2000).
   *4.3   Fifth Supplemental Indenture, dated as of January 17, 2001,
          between the registrant and Bank One Trust Company, N.A.
          (filed as Exhibit 4(k) to the Annual Report on Form 10-K for
          the year ended December 31, 2000).
  **4.4   Registration Rights Agreement, dated January 17, 2001, by
          and among the registrant and UBS Warburg LLC, Credit Suisse
          First Boston, Lehman Brothers, and other parties listed
          therein, as Initial Purchasers.



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EXHIBIT
NUMBER                              EXHIBIT
----------------------------------------------------------------------
       
  **5.1   Opinion of Andrews & Kurth L.L.P., as to the validity of the
          new debentures and new PATS.
  **8.1   Opinion of Andrews & Kurth L.L.P., as to certain tax
          matters.
 **10.1   Note Purchase Agreement between registrant and the parties
          listed therein, dated January 17, 2001.
  *12.1   Statement regarding Computation of Ratios of Earnings to
          Combined Fixed Charges and Preferred Stock Dividend
          Requirements, (filed as Exhibit 12 to the Current Report on
          Form 8-K filed May 22, 2001, and as Exhibit 12 to the
          Quarterly Report on Form 10-Q for the quarter ended March
          31, 2001).
  *21     Subsidiaries of the registrant (filed as Exhibit 21 to the
          Annual Report on Form 10-K for the year ended December 31,
          2000).
   23.1   Consent of Ernst & Young LLP.
 **24.1   Power of Attorney.
 **25.1   Statement of Eligibility of Bank One Trust Company, N.A., as
          trustee, on Form T-1 with respect to the issuance of 7.50%
          Debentures due January 15, 2031, Series A, by the registrant
          to the Indenture between the registrant and Bank One Trust
          Company, N.A., as trustee, and with respect to the issuance
          of 6.75% Putable Asset Term Securities (PATS)
          Putable/Callable January 15, 2006, Series A, by the
          registrant pursuant to the Indenture between the registrant
          and Bank One Trust Company, N.A., as trustee.
 **99.1   Form of Letter of Transmittal.



---------------
 * Indicates exhibits incorporated by reference as indicated.


**Previously filed.


ITEM 22.  UNDERTAKINGS

The undersigned Registrant hereby undertakes:

     (a)  that, for purposes of determining any liability under the Securities
          Act of 1933, each filing of the registrant's annual report pursuant to
          Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (and,
          where applicable, each filing of an employee benefit plan's annual
          report pursuant to Section 15(d) of the Securities Exchange Act of
          1934) that is incorporated by reference in the registration statement
          shall be deemed to be a new registration statement relating to the
          securities offered therein, and the offering of such securities at
          that time shall be deemed to be the initial bona fide offering
          thereof.

     (b)  to respond to requests for information that is incorporated by
          reference into the prospectus pursuant to Item 4, 10(b), 11, or 13 of
          this form, within one business day of receipt of such request, and to
          send the incorporated documents by first class mail or other equally
          prompt means. This includes information contained in documents filed
          subsequent to the effective date of the registration statement through
          the date of responding to the request.

     (c)  to supply by means of a post-effective amendment all information
          concerning a transaction, and the company being acquired involved
          therein, that was not the subject of and included in the Registration
          Statement when it became effective.

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PART II
--------------------------------------------------------------------------------

SIGNATURES


Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has duly caused this registration statement to be signed on
its behalf by the undersigned, thereunto duly authorized, in the City of Tulsa,
Oklahoma, on May 30, 2001.


                                          THE WILLIAMS COMPANIES, INC.

                                          By:
                                              /s/    SUZANNE H. COSTIN
                                            ------------------------------------
                                              Name: Suzanne H. Costin
                                              Title:  Attorney-in-Fact

Pursuant to the requirements of the Securities Act of 1933, this registration
statement has been signed by the following persons in the capacities and on the
dates indicated.




                     SIGNATURE                                    TITLE                     DATE
-----------------------------------------------------------------------------------------------------
                                                                                 
               /s/ KEITH E. BAILEY*                  Chairman of the Board ,             May 30, 2001
---------------------------------------------------  President, Chief Executive
                  Keith E. Bailey                    Officer (Principal Executive
                                                     Officer) and Director

               /s/ JACK D. MCCARTHY*                 Senior Vice President -- Finance    May 30, 2001
---------------------------------------------------  (Principal Financial Officer)
                 Jack D. McCarthy

                /s/ GARY R. BELITZ*                  Controller (Principal Accounting    May 30, 2001
---------------------------------------------------  Officer)
                  Gary R. Belitz

               /s/ HUGH M. CHAPMAN*                  Director                            May 30, 2001
---------------------------------------------------
                  Hugh M. Chapman

                 /s/ GLENN A. COX*                   Director                            May 30, 2001
---------------------------------------------------
                   Glenn A. Cox

             /s/ THOMAS H. CRUIKSHANK*               Director                            May 30, 2001
---------------------------------------------------
               Thomas H. Cruikshank

               /s/ WILLIAM E. GREEN*                 Director                            May 30, 2001
---------------------------------------------------
                 William E. Green

                 /s/ W. R. HOWELL*                   Director                            May 30, 2001
---------------------------------------------------
                   W. R. Howell

                /s/ JAMES C. LEWIS*                  Director                            May 30, 2001
---------------------------------------------------
                  James C. Lewis

              /s/ CHARLES M. LILLIS*                 Director                            May 30, 2001
---------------------------------------------------
                 Charles M. Lillis

                                                     Director
---------------------------------------------------
                  George A. Lorch

              /s/ FRANK T. MACINNIS*                 Director                            May 30, 2001
---------------------------------------------------
                 Frank T. MacInnis



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PART II
--------------------------------------------------------------------------------




                     SIGNATURE                                    TITLE                     DATE
-----------------------------------------------------------------------------------------------------
                                                                                 
               /s/ PETER C. MEINIG*                  Director                            May 30, 2001
---------------------------------------------------
                  Peter C. Meinig

               /s/ GORDON R. PARKER*                 Director                            May 30, 2001
---------------------------------------------------
                 Gordon R. Parker

               /s/ JANICE D. STONEY*                 Director                            May 30, 2001
---------------------------------------------------
                 Janice D. Stoney

              /s/ JOSEPH H. WILLIAMS*                Director                            May 30, 2001
---------------------------------------------------
                Joseph H. Williams

            *By: /s/ SUZANNE H. COSTIN
---------------------------------------------------
                 Suzanne H. Costin
                 Attorney-in-Fact
                Dated: May 30, 2001



--------------------------------------------------------------------------------
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   56

INDEX TO EXHIBITS




EXHIBIT
NUMBER                              EXHIBIT
----------------------------------------------------------------------
       
   *3.1   Restated Certificate of Incorporation, as supplemented
          (filed as Exhibit 3(I)(a) to the Annual Report on Form 10-K
          for the year ended December 31, 2000).
   *3.2   Restated Bylaws (filed as Exhibit 99.1 to Form 8-K filed
          January 19, 2000).
   *4.1   Form of Senior Debt Indenture between the registrant and
          Bank One Trust Company, N.A. (formerly The First National
          Bank of Chicago), as Trustee, (filed as Exhibit 4.1 to the
          Registration Statement on Form S-3 filed September 8, 1997).
   *4.2   Fourth Supplemental Indenture, dated as of January 17, 2001,
          between the registrant and Bank One Trust Company, N.A.
          (filed as Exhibit 4(j) to the Annual Report on Form 10-K for
          the year ended December 31, 2000).
   *4.3   Fifth Supplemental Indenture, dated as of January 17, 2001,
          between the registrant and Bank One Trust Company, N.A.
          (filed as Exhibit 4(k) to the Annual Report on Form 10-K for
          the year ended December 31, 2000).
  **4.4   Registration Rights Agreement, dated January 17, 2001, by
          and among the registrant and UBS Warburg LLC, Credit Suisse
          First Boston, Lehman Brothers, and other parties listed
          therein, as Initial Purchasers.
  **5.1   Opinion of Andrews & Kurth L.L.P., as to the validity of the
          new debentures and new PATS.
  **8.1   Opinion of Andrews & Kurth L.L.P., as to certain tax
          matters.
 **10.1   Note Purchase Agreement between registrant and the parties
          listed therein, dated January 17, 2001.
  *12.1   Statement regarding Computation of Ratios of Earnings to
          Combined Fixed Charges and Preferred Stock Dividend
          Requirements, (filed as Exhibit 12 to the Current Report on
          Form 8-K filed May 22, 2001, and as Exhibit 12 to the
          Quarterly Report on Form 10-Q for the quarter ended March
          31, 2001).
  *21     Subsidiaries of the registrant (filed as Exhibit 21 to the
          Annual Report on Form 10-K for the year ended December 31,
          2000).
   23.1   Consent of Ernst & Young LLP.
 **24.1   Power of Attorney.
 **25.1   Statement of Eligibility of Bank One Trust Company, N.A., as
          trustee, on Form T-1 with respect to the issuance of 7.50%
          Debentures due January 15, 2031, Series A, by the registrant
          to the Indenture between the registrant and Bank One Trust
          Company, N.A., as trustee, and with respect to the issuance
          of 6.75% Putable Asset Term Securities (PATS)
          Putable/Callable January 15, 2006, Series A, by the
          registrant pursuant to the Indenture between the registrant
          and Bank One Trust Company, N.A., as trustee.
 **99.1   Form of Letter of Transmittal.



---------------

 * Indicates exhibits incorporated by reference as indicated.


**Previously filed.


--------------------------------------------------------------------------------
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