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                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                  SCHEDULE TO
                                (Rule 14d-100)

       TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

                                USX CORPORATION
                              USX CAPITAL TRUST I
                                USX CAPITAL LLC
                      (Name of Subject Company (Issuer))

                       UNITED STATES STEEL LLC (Offeror)
                             to be converted into
                        UNITED STATES STEEL CORPORATION
    (Name of Filing Person (Identifying status as Offeror, Issuer or Other
                                   Person))

        6.50% Cumulative Convertible Preferred Stock of USX Corporation
   6.75% Convertible Quarterly Income Preferred Securities (QUIPS/SM/) of USX
                                Capital Trust I
 8.75% Cumulative Monthly Income Preferred Shares, Series A (MIPS(R)), of USX
                                  Capital LLC
                        (Title of Class of Securities)

                         902905 1819 (USX Corporation)
                       903339 E201 (USX Capital Trust I)
                         P96460 1031 (USX Capital LLC)
                     (CUSIP Number of Class of Securities)

                             Dan D. Sandman, Esq.
                        General Counsel, Secretary and
            Senior Vice President--Human Resources & Public Affairs
                                USX Corporation
                               600 Grant Street
                      Pittsburgh, Pennsylvania 15219-4776
                                (412) 433-1121
  (Name, Address and Telephone Number of Person Authorized to Receive Notices
                              and Communications
                        on Behalf of the Filing Person)

                                   COPY TO:

                            Robert B. Pincus, Esq.
                   Skadden, Arps, Slate, Meagher & Flom LLP
                               One Rodney Square
                          Wilmington, Delaware 19801
                                (302) 651-3000

                           CALCULATION OF FILING FEE

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             Transaction Valuation*                     Amount of Filing Fee**
             ----------------------                     ----------------------
                                                     
                  $356,489,204                                 $71,298
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-------
*   Estimated for purposes of calculating the amount of the filing fee only.
    Assumes the issuance of an aggregate of $365 million principal amount of
     % Senior Quarterly Income Debt Securities (SQUIDS/SM/) due 2031 in exchange
    for an aggregate of $365 million face amount of 6.50% Cumulative
    Convertible Preferred Stock of USX Corporation (the "6.50% Preferred
    Stock"), 6.75% Convertible Quarterly Income Preferred Securities (QUIPS/SM/)
    of USX Capital Trust I (the "QUIPS"), 8.75% Cumulative Monthly Income
    Preferred Shares, Series A (MIPS(R)) of USX Capital LLC (the "MIPS", and,
    together with the 6.50% Preferred Stock and the QUIPS, the "Outstanding
    Securities"), or 64.26% of the Outstanding Securities of each series.
    Based on the sum of (i) the product of (A) 2,404,487, the number of shares
    of 6.50% Preferred Stock outstanding on September 30, 2001, and (B)
    64.36%, the percentage of shares of 6.50% Preferred Stock assumed to be
    accepted in the exchange offers described herein, multiplied by $48.40,
    the average of the high and low sales price of the 6.50% Preferred Stock
    on October 10, 2001, (ii) the product of (A) 3,937,163, the number of
    QUIPS outstanding on September 30, 2001, and (B) 64.36%, the percentage of
    QUIPS assumed to be accepted in the exchange offers described herein,
    multiplied by $47.40, the average of the high and low sales price of the
    QUIPS on October 10, 2001, and (iii) the product of (A) 10,000,000, the
    number of MIPS outstanding on September 30, 2001, and (B) 64.36%, the
    percentage of MIPS assumed to be accepted in the exchange offers described
    herein, multiplied by $25.09, the average of the high and low sales price
    of the MIPS on October 10, 2001.
**  The amount of the filing fee, calculated in accordance with Rule 0-11 of
    the Securities Exchange Act of 1934, as amended, equals 1/50th of one
    percent of the Transaction Value.
[X]  Check box if any part of the fee is offset as provided by Rule 0-11(a)(2)
     and identify the filing with which the offsetting fee was previously
     paid. Identify the previous filing by registration statement number, or
     the Form or Schedule and the date of its filing.
    Amount Previously Paid:  $88,378       Filing Party:  United States Steel
    Form or Registration No.:  Form S-4    LLC
                                           Date Filed:  October 11, 2001
[_]Check the box if the filing relates solely to preliminary communications
   made before the commencement of a tender offer.
 Check the appropriate boxes below to designate any transactions to which the
 statement relates:
    [_]Third-party tender offer subject to Rule 14d-1.
                                           [_] Issuer tender offer subject to
                                           Rule 13e-4.
    [_]Going-private transaction subject to Rule 13e-3.
                                           [_] Amendment to Schedule 13D under
                                           Rule 13d-2.

  Check the following box if the filing is a final amendment reporting the
results of the tender offer: [_]

  SQUIDS/SM/ and QUIPS/SM/ are registered service marks and MIPS(R) is a
registered trademark of Goldman, Sachs & Co.

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  This Tender Offer Statement on Schedule TO relates to the offers (the
"Exchange Offers") by United States Steel LLC, a Delaware limited liability
company ("United States Steel"), which is currently a wholly owned subsidiary
of USX Corporation, a Delaware corporation ("USX"), to exchange an equal
principal amount of 9.25% Senior Quarterly Income Debt Securities (SQUIDSSM)
due 2031 of United States Steel (the "SQUIDS") for each validly tendered and
accepted (i) share of 6.50% Cumulative Convertible Preferred Stock of USX (the
"6.50% Preferred Stock"); (ii) 6.75% Convertible Quarterly Income Preferred
Security (QUIPSSM) of USX Capital Trust I, a wholly owned subsidiary of USX
(the "6.75% QUIPS"); and (iii) 8.75% Cumulative Monthly Income Preferred
Share, Series A (MIPS(R)) of USX Capital LLC, a wholly owned subsidiary of USX
(the "8.75% MIPS" and, together with the 6.50% Preferred Stock and the 6.75%
QUIPS, the "Outstanding Securities"), plus payment of accrued but unpaid
dividends or distributions on the Outstanding Securities; provided, that
United States Steel will only accept up to an aggregate of $365 million face
amount of the Outstanding Securities in the Exchange Offers; and, further
provided, that following the Exchange Offers, there must remain outstanding at
least $5 million face amount of each series of the Outstanding Securities.

  The USX board of directors has approved a reorganization, pursuant to which
USX will distribute all of the equity securities of United States Steel
Corporation to the holders of USX's U.S. Steel Group common stock (the
"Separation"). As part of the Separation, United States Steel LLC will be
converted into United States Steel Corporation, a Delaware corporation, and
USX will change its name to Marathon Oil Corporation. The terms and conditions
of the Separation are described in the proxy statement/prospectus of USX,
dated September 20, 2001 (the "Proxy Statement/Prospectus"), which forms a
part of the registration statement on Form S-4 of United States Steel
(Registration No. 333-69090), dated September 7, 2001, as amended September
20, 2001 (as so amended, the "Separation Registration Statement"). United
States Steel is making the Exchange Offers in connection with the Separation
and the related financing.

  In connection with the Exchange Offers, United States Steel has filed under
the Securities Act of 1933, as amended, a registration statement on Form S-4
(Registration No. 333-   ) (as amended through the date hereof, the "Exchange
Registration Statement") to register up to $365 million aggregate principal
amount of the SQUIDS. The terms and conditions of the Exchange Offers are
described in (i) the prospectus, dated October  , 2001 (the "Prospectus"),
which forms a part of the Exchange Registration Statement, a copy of which is
attached hereto as Exhibit 12(a)(1)(i); and (ii) the related Letters of
Transmittal and Instructions thereto, copies of which are attached hereto as
Exhibits 12(a)(1)(ii) through 12(a)(1)(iv), respectively (which, as they may
be amended or supplemented from time to time, together constitute the
"Offers").

  Pursuant to General Instruction F to Schedule TO, the information contained
in the Offers, including all schedules and annexes thereto, is hereby
expressly incorporated herein by reference in response to all the items of
this Statement, except as otherwise set forth below.

Item 1. Summary Term Sheet.

  The information set forth in the section of the Prospectus entitled
"Summary--Questions and Answers About the Exchange Offers" is incorporated
herein by reference.

Item 2. Subject Company Information.

  (a) Name and Address.

  The subject companies and issuers are USX Corporation, a Delaware
corporation, and its wholly owned subsidiaries, USX Capital Trust I, a
statutory business trust formed under the Delaware Business Trust Act, and USX
Capital LLC, a limited life company organized under the laws of the Turks and
Caicos Islands.

                                       1


  (b) Securities.

  The subject classes of securities are 6.50% Cumulative Convertible Preferred
Stock of USX, 6.75% Convertible Quarterly Income Preferred Securities of USX
Capital Trust I and 8.75% Cumulative Monthly Income Preferred Shares, Series A
of USX Capital LLC. As of September 30, 2001, there were outstanding 2,404,487
shares of 6.50% Preferred Stock, 3,937,216 of the 6.75% QUIPS and 10,000,000
of the 8.75% MIPS.

  (c) Trading Market and Price.

  The information set forth in the section of the Prospectus entitled
"Information About the Outstanding Securities" is incorporated herein by
reference.

Item 3. Identity and Background of Filing Person

  (a) Name and Address.

  The principal executive offices of United States Steel, the filing person,
and USX, its parent company, are located at 600 Grant Street, Pittsburgh,
Pennsylvania 15219-4776 and their telephone number is (412) 433-1121.

  The information set forth in the section of the Prospectus entitled
"Management of United States Steel" and the section of the Proxy Statement of
USX on Schedule 14A filed on March 12, 2001 entitled "The Board of Directors
and Its Committees" is incorporated herein by reference. The address of each
director and executive officer listed in these sections is c/o USX
Corporation, 600 Grant Street, Pittsburgh, Pennsylvania 15219-4776 and the
telephone number is (412) 433-1121.

Item 4. Terms of the Transaction.

  (a) Material Terms.

  The information set forth in the sections of the Prospectus entitled "The
Exchange Offers," "Description of the SQUIDS," "Certain Federal Income Tax
Considerations," "The Exchange Offers-- Accounting Treatment of Exchange
Offers" and "Comparison of the Outstanding Securities and the SQUIDS" is
incorporated herein by reference.

  (b) Purchases.

  No securities will be purchased from any officer, director or affiliate of
USX in connection with the Exchange Offers.

Item 5. Past Contracts, Transactions, Negotiations and Agreements.

  (e) Agreements Involving the Subject Company's Securities.

  The information set forth in the sections of the Prospectus entitled
"Management of United States Steel," "The Proposed Separation," "Description
of Other Indebtedness," "Description of the SQUIDS " and "Security Ownership
of Directors and Executive Officers" is incorporated herein by reference.

  The information set forth in the sections of the Proxy Statement/Prospectus
entitled "Description of Capital Stock of Marathon Oil Corporation Following
the Separation," "Description of Capital Stock of United States Steel
Corporation Following the Separation," "Proposal One: The Separation--
Financing Arrangements Relating to the Separation," "Proposal One: The
Separation--Interests of Officers and Directors in the Separation,"
"Information about United States Steel--Management of

                                       2


United States Steel Corporation Following the Separation," and "Information
About Marathon-- Management of Marathon Oil Corporation Following the
Separation" is incorporated herein by reference.

Item 6. Purposes of the Transaction and Plans or Proposals.

  (a) Purposes.

  The information set forth in the sections of the Prospectus entitled "The
Exchange Offers," "The Proposed Separation" and "Description of Other
Indebtedness" is incorporated herein by reference.

  (b) Use of Securities Acquired.

  The Outstanding Securities acquired pursuant to the Exchange Offers will be
cancelled and retired.

  (c) Plans.

  The information set forth in the sections of the Prospectus entitled "The
Proposed Separation," "Relationship Between United States Steel Corporation
and Marathon Oil Corporation After the Separation," "Management of United
States Steel," "Capitalization," "Unaudited Pro Forma Condensed Combined
Financial Statements," "Description of Other Indebtedness," "Description of
the SQUIDS" and "Comparison of the Outstanding Securities and the SQUIDS" is
incorporated herein by reference.

  The information set forth in the sections of the Proxy Statement/Prospectus
entitled "Description of Capital Stock of Marathon Oil Corporation Following
the Separation," "Description of Capital Stock of United States Steel
Corporation Following the Separation," "Market Price and Dividend Information
of Marathon Group Shares and U. S. Steel Group Shares," "Proposal One: The
Separation--Financing Arrangements Relating to the Separation," "Comparison of
the Rights of Stockholders," "Information About United States Steel--
Management of United States Steel Corporation Following the Separation," and
"Information About Marathon--Management of Marathon Oil Corporation Following
the Separation" is incorporated herein by reference.

Item 7. Source and Amount of Funds or Other Consideration.

 (a) Source of Funds.

  Not applicable.

 (b) Conditions.

  Not applicable.

 (d) Borrowed Funds.

  Not applicable.

Item 8. Interest in Securities of the Subject Company.

 (a) Securities Ownership.

  Neither United States Steel nor USX, nor any of their respective directors
or executive officers or majority-owned subsidiaries, nor any of their
associates owns any of the Outstanding Securities.

 (b) Securities Transactions.

  None.

                                       3


Item 9. Persons/Assets, Retained, Employed, Compensated or Used.

 (a) Solicitations or Recommendations.

  The information set forth in the sections of the Prospectus entitled "The
Exchange Offers--Dealer Managers and Soliciting Dealers" and "The Exchange
Offers--Other Fees and Expenses" is incorporated herein by reference.

Item 10. Financial Statements.

 (a) Financial Information.

  The following financial statements and financial information are
incorporated herein by reference:

    (1) The audited consolidated financial statements of USX set forth in
  USX's Annual Report on Form 10-K for the fiscal year ended December 31,
  2000, as amended by Form 10-K/A filed on September 14, 2001 and by Form 10-
  K/A filed on October 11, 2001;

    (2) The unaudited consolidated financial statements of USX set forth in
  USX's Quarterly Report on Form 10-Q for the quarter ended June 30, 2001;
  and

    (3) The information set forth in the sections of the Prospectus entitled
  "Summary Financial Data of United States Steel" and "Selected Historical
  Financial Information for United States Steel" is incorporated herein by
  reference; and

    (4) The information set forth in the sections of the Prospectus entitled
  "Summary Financial Data of United States Steel" and "Selected Historical
  Financial Information for United States Steel" is incorporated herein by
  reference.

 (b) Pro Forma Information.

  The information set forth in the section of the Prospectus entitled
"Unaudited Pro Forma Condensed Combined Financial Statements" is incorporated
herein by reference.

Item 11. Additional Information.

 (a)(1) Agreements.

  The information set forth in the sections of the Prospectus entitled
"Management of United States Steel" and "Relationship Between United States
Steel Corporation and Marathon Oil Corporation After the Separation" is
incorporated herein by reference. The information set forth in the section of
the Proxy Statement/Prospectus entitled "Proposal One: The Separation--
Interests of Officers and Directors in the Separation" is incorporated herein
by reference.

 (a)(2) Regulatory Requirements.

  The information set forth in the section of the Prospectus entitled "The
Exchange Offers" is incorporated herein by reference.

 (a)(3) Applicability of Anti-Trust Laws.

  Not applicable.

 (a)(4) Applicability of Margin Requirements.

  Not applicable.

                                       4


 (a)(5) Legal Proceedings.

  None.

 (b) Other Material Information.

  The information set forth in the Prospectus is incorporated herein by
reference.

Item 12. Exhibits.

  A list of exhibits filed herewith is contained in the Index to Exhibits,
which is incorporated herein by reference.

Item 13. Information Required by Schedule 13E-3.

  Not applicable.


                                       5


                                   SIGNATURE

  After due inquiry and to the best of my knowledge and belief, I certify that
the information set forth in this statement is true, complete and correct.

  Date: October 11, 2001                         /s/ Gretchen R. Haggerty
                                          By___________________________________
                                                   Gretchen R. Haggerty
                                               Vice President--Accounting &
                                                          Finance

                                       6


                               INDEX TO EXHIBITS



 Exhibit No.    Description
 -----------    -----------
             
 12(a)(1)(i)    Prospectus, dated October  , 2001 (incorporated by reference to
                the Exchange Registration Statement).
 12(a)(1)(ii)   Form of Letter of Transmittal for the 6.50% Preferred Stock
                (incorporated by reference to Exhibit 99.1 to the Exchange
                Registration Statement).
 12(a)(1)(iii)  Form of Letter of Transmittal for the 6.75% QUIPS (incorporated
                by reference to Exhibit 99.2 to the Exchange Registration
                Statement).
 12(a)(1)(iv)   Form of Letter of Transmittal for the 8.75% MIPS (incorporated
                by reference to Exhibit 99.3 to the Exchange Registration
                Statement).
 12(a)(1)(v)    Form of Notice of Guaranteed Delivery for the 6.50% Preferred
                Stock (incorporated by reference to Exhibit 99.4 to the
                Exchange Registration Statement).
 12(a)(1)(vi)   Form of Notice of Guaranteed Delivery for the 6.75% QUIPS
                (incorporated by reference to Exhibit 99.5 to the Exchange
                Registration Statement).
 12(a)(1)(vii)  Form of Notice of Guaranteed Delivery for the 8.75% MIPS
                (incorporated by reference to Exhibit 99.6 to the Exchange
                Registration Statement).
 12(a)(1)(viii) Form of Letter to Brokers, Securities Dealers, Commercial
                Banks, Trust Companies and Other Nominees (incorporated by
                reference to Exhibit 99.9 to the Exchange Registration
                Statement).
 12(a)(1)(ix)   Form of Letter to Registered Holders and Depository Trust
                Company Participants (incorporated by reference to Exhibit
                99.10 to the Exchange Registration Statement).
 12(a)(1)(x)    Letter to Clients (incorporated by reference to Exhibit 99.12
                to the Exchange Registration Statement).
 12(a)(2)       Not applicable.
 12(a)(3)       Not applicable.
 12(a)(4)       Prospectus dated October  , 2001 (incorporated by reference to
                the Exchange Registration Statement).
 12(a)(5)(i)    The audited consolidated financial statements of USX
                Corporation (incorporated by reference to USX Corporation's
                Annual Report on Form 10-K for the fiscal year ended December
                31, 2000, as amended by Form 10-K/A filed on September 14,
                2001).
 12(a)(5)(ii)   The unaudited consolidated financial statements of USX
                Corporation (incorporated by reference to USX Corporation's
                Quarterly Report on Form 10-Q for the quarter ended March 31,
                2001).
 12(a)(5)(iii)  The unaudited consolidated financial statements of USX
                (incorporated by reference to USX Corporation's Quarterly
                Report on Form 10-Q for the quarter ended June 30, 2001).
 12(a)(5)(v)    Form of Newspaper Announcement (incorporated by reference to
                Exhibit 99.13 to the Exchange Registration Statement).
 12(a)(5)(vi)   Press Release (incorporated by reference to Exhibit 99.14 to
                the Exchange Registration Statement).
 12(b)          Not applicable.
 12(c)          Not applicable.





 Exhibit No. Description
 ----------- -----------
          
 12(d)(1)    Agreement and Plan of Reorganization, dated as of July 31, 2001,
             between USX (to be renamed Marathon Oil Corporation) and United
             States Steel (to be converted into United States Steel
             Corporation), included as Annex A to the Proxy
             Statement/Prospectus (incorporated by reference to the Separation
             Registration Statement).
 12(d)(2)    Form of Tax Sharing Agreement between USX and United States Steel
             (incorporated by reference to Exhibit 10.1 to the Separation
             Registration Statement).
 12(d)(3)    Form of Transition Services Agreement between USX and United
             States Steel (incorporated by reference to Exhibit 10.2 to the
             Separation Registration Statement).
 12(d)(4)    Form of Financial Matters Agreement between USX and United States
             Steel (incorporated by reference to Exhibit 10.3 to the Separation
             Registration Statement).
 12(d)(5)    Form of Insurance Assistance Agreement between USX and United
             States Steel (incorporated by reference to Exhibit 10.4 to the
             Separation Registration Statement).
 12(d)(6)    Form of License Agreement between USX and United States Steel
             (incorporated by reference to Exhibit 10.5 to the Separation
             Registration Statement).
 12(d)(7)    Form of the United States Steel Corporation 2002 Stock Plan
             (included as Annex F to the Proxy Statement/Prospectus,
             incorporated by reference to the Separation Registration
             Statement).
 12(d)(8)    Form of United States Steel Corporation Senior Executive Officer
             Annual Incentive Plan, included as Annex G to the Proxy
             Statement/Prospectus (incorporated by reference to the Separation
             Registration Statement).
 12(d)(9)    Form of United States Steel Corporation Annual Incentive
             Compensation Plan (incorporated by reference to Exhibit 10.8 to
             the Separation Registration Statement).
 12(d)(10)   Form of United States Steel Corporation Non-Officer Restricted
             Stock Plan (effective January 1, 2002) (incorporated by reference
             to Exhibit 10.9 to the Separation Registration Statement).
 12(d)(11)   Completion and Retention Agreement, dated as of August 8, 2001,
             among USX, United States Steel and Thomas J. Usher (incorporated
             by reference to Exhibit 10.10 to the Separation Registration
             Statement).
 12(d)(12)   Retention Agreement, dated as of September 14, 2001, between
             United States Steel and Dan D. Sandman (incorporated by reference
             to Exhibit 10.11 to the Separation Registration Statement).
 12(d)(13)   Form of Change of Control Agreements, between United States Steel
             and Various Officers (incorporated by reference to Exhibit 10.12
             to the Separation Registration Statement).
 12(d)(14)   Form of Rights Agreement between United States Steel Corporation
             and [   ], as Rights Agent (incorporated by reference to Exhibit
             4.1 to the Separation Registration Statement).
 12(d)(15)   Form of Amendment to Rights Agreement between Marathon Oil
             Corporation and Mellon Investor Services, as Rights Agent
             (incorporated by reference to Exhibit 4.2 to the Separation
             Registration Statement).
 12(d)(16)   Indenture, dated as of July 27, 2001, among United States Steel,
             United States Steel Financing Corp., Issuers; USX, Guarantor; and
             The Bank of New York, Trustee (incorporated by reference to
             Exhibit 4.2 to USX's Form 10-Q filed for the period ending June
             30, 2001).





 Exhibit No. Description
 ----------- -----------
          
 12(d)(17)   Indenture, dated as of October  , 2001, among United States Steel,
             Issuer; USX, Guarantor; and The Bank of New York, Trustee
             (incorporated by reference to Exhibit 4.1 to the Exchange
             Registration Statement).
 12(d)(18)   Dealer Managers Agreement, dated as of October  , 2001, among
             United States Steel, Issuer; USX, Guarantor; and Goldman, Sachs &
             Co., Dealer Managers (incorporated by reference to Exhibit 1.1 to
             the Exchange Registration Statement).
 12(d)(19)   Exchange Agent Agreement, dated as of October  , 2001, between
             United States Steel and The Bank of New York (incorporated by
             reference to Exhibit 99.11 to the Exchange Registration
             Statement).
 12(d)(20)   Form T-1 Statement of Eligibility of Trustee under the Trust
             Indenture Act of 1939, as amended, of The Bank of New York, as
             trustee under the Indenture filed as Exhibit 4.1 to the Exchange
             Registration Statement (incorporated by reference to Exhibit 25.1
             to the Exchange Registration Statement).
 12(f)       Not applicable.
 12(g)       None.
 12(h)       Opinion of Miller & Chevalier, Chartered (incorporated by
             reference to Exhibit 8 to the Exchange Registration Statement).