Exhibit 1.1

                           DEALER MANAGER AGREEMENT


March __, 1997

Goldman, Sachs & Co.
85 Broad Street
New York, New York 10004

Merrill Lynch & Co.
Merrill Lynch, Pierce, Fenner & Smith
            Incorporated
250 Vesey Street
New York, New York 10281

Ladies and Gentlemen:

          1.  USX Corporation, a Delaware corporation (the "Company") proposes
to exchange 6.75% Trust Convertible Preferred Securities (the "Trust Convertible
Preferred Securities") of USX Capital Trust I (the "Trust"), a statutory
business trust organized under the Business Trust Act (the "Delaware Act") of
the State of Delaware (chapter 38, Title 12, of the Delaware Code, 12 Del. C.
Sec 3801 et seq.) for up to 6,700,000 shares of 6.50% Cumulative Convertible
Preferred Stock (liquidation preference $50.00 per share) (the "6.50%
Convertible Preferred Stock") of the Company on the basis of one Trust Preferred
Convertible Security for each share of 6.50% Convertible Preferred Stock validly
tendered and accepted for exchange.  The Trust Convertible Preferred Securities
will be guaranteed (the "Guarantee") by the Company to the extent described in
the Prospectus (as hereinafter defined).  The exchange offer, as it may be
amended and supplemented, described above is herein referred to as the "Exchange
Offer."

          In connection with the Exchange Offer, the Company will deposit in the
Trust as trust assets its 6.75% Convertible Junior Subordinated Debentures (the
"Debentures") and the Trust will transfer to the Company the Trust Convertible
Preferred Securities and its common securities (the "Trust Common Securities")
as set forth in the Prospectus.  The Trust Convertible Preferred Securities will
be issued under the Trust's Amended and Restated Declaration of Trust (the
"Declaration") and the Debentures will be issued under an Indenture between the
Company and The Bank of New York, as trustee (including the related supplemental
indenture governing the Debentures to be deposited in the Trust, the
"Indenture").  The Bank of New York will act as institutional trustee under the
Declaration (the "Institutional Trustee"), trustee under the Indenture (the
"Indenture Trustee") and trustee under the Guarantee (the "Guarantee Trustee").

          2.  Engagement as Dealer Managers.  By this Dealer Manager Agreement
              -----------------------------                                   
(the "Agreement"), each of the Company and the Trust hereby engages and appoints
you as the exclusive Dealer Managers for the Exchange Offer and authorizes you
to act as such in connection with the Exchange Offer.

 
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          As Dealer Managers you severally agree, in accordance with your 
customary practice, to perform in connection with the Exchange Offer those
services as are customarily performed by investment banking concerns in
connection with similar offers, including, without limitation, soliciting from
individuals and institutions the tender of 6.50% Convertible Preferred Stock
pursuant to and in accordance with the terms and conditions of the Exchange
Offer. You shall act as independent contractors in connection with the Exchange
Offer with duties solely to the Company and the Trust and nothing herein
contained shall constitute you as agents of the Company or the Trust in
connection with the solicitation of such 6.50% Convertible Preferred Stock
pursuant to and in accordance with the terms and conditions of the Exchange
Offer; provided, however, that the Company hereby authorizes the Dealer
Managers, and/or one or more registered brokers or dealers chosen by the Dealer
Managers, to act as the Company's agents in making the Exchange Offer to
residents of any jurisdiction in which such agents designation may be necessary
to comply with applicable law. Nothing in this Agreement shall constitute the
Dealer Managers as partners or joint venturers with the Company, the Trust or
any of their subsidiaries or with each other. On the basis of the
representations and warranties and agreements of the Company and the Trust
contained herein and subject to and in accordance with the terms and conditions
hereof and of the Exchange Offer, the Dealer Managers severally agree to act in
such capacity.

          3.  Registration Statement, Prospectus and Offering Materials.  
              ---------------------------------------------------------       
(a) The Company and the Trust have prepared and filed with the Securities and
Exchange Commission (the "Commission"), under the Securities Act of 1933, as
amended, and the rules and regulations of the Commission promulgated thereunder
(collectively, the "Securities Act"), a registration statement on Form S-4
covering the registration of the Trust Convertible Preferred Securities, the
Guarantee, the Debentures, and shares of USX--U.S. Steel Group Common Stock,
$1.00 par value per share (the "Steel Stock"), of the Company issuable upon
conversion of the Trust Convertible Preferred Securities and the Debentures.
Such registration statement, including the exhibits thereto and any documents
incorporated by reference therein, as amended at the time it becomes effective
or as thereafter amended or supplemented from time to time, is herein called the
"Registration Statement."  The final prospectus included in the Registration
Statement (including any documents incorporated in the prospectus by reference)
is herein called the "Prospectus," except that if the final prospectus furnished
to the Dealer Managers for use in connection with the Exchange Offer differs
from the prospectus set forth in the Registration Statement (whether or not such
prospectus is required to be filed pursuant to Rule 424(b)), the term
"Prospectus" shall refer to the final prospectus furnished to the Dealer
Managers for such use.  The terms "supplement" and "amendment" or "supplemented"
and "amended" as used herein with respect to the Prospectus shall include all
documents deemed to be incorporated by reference in the Prospectus that are
filed subsequent to the date of the Prospectus and prior to the termination of
the Exchange Offer by the Company with the Commission pursuant to the Securities
Exchange Act of 1934, as amended (the "Exchange Act").

     (b)  The Company and the Trust have prepared and filed, or agree that prior
to or on the date of commencement of the Exchange Offer (the "Commencement
Date") they will file, with the Commission under the Exchange Act and the rules
and regulations promulgated

 
                                                                               3

thereunder a Statement on Schedule 13E-4 with respect to the Exchange Offer
(including the exhibits thereto and any documents incorporated by reference
therein, the "Schedule 13E-4").

     (c)  The Registration Statement, Prospectus and the related letters from
the Dealer Managers to registered holders and participants in The Depository
Trust Company, securities brokers, dealers, commercial banks, trust companies
and other nominees, letters to beneficial owners of 6.50% Convertible Preferred
Stock, letters of transmittal (the "Letters of Transmittal"), notice of
guaranteed delivery (the "Notice of Guaranteed Delivery") and any newspaper
announcements, press releases and other offering materials and information the
Company may use or prepare, approve or authorize for use in connection with the
Exchange Offer, including the Schedule 13E-4 as amended or supplemented from
time to time, are herein collectively referred to as the "Exchange Offer
Materials."

          4.  Use of Exchange Offer Materials.  (a)  The Exchange Offer
              -------------------------------                          
Materials have been or will be prepared and approved by, and are the sole
responsibility of, the Company and the Trust. The Company shall, to the extent
permitted by law, use its best efforts to disseminate the Exchange Offer
Materials to each registered holder of any 6.50% Convertible Preferred Stock, as
soon as practicable after the Commencement Date, pursuant to Rule 13e-4 under
the Exchange Act and comply with its obligations thereunder.  Thereafter, to the
extent practicable until three days prior to the Expiration Date of the Exchange
Offer, the Company shall use its best efforts to cause copies of such Exchange
Offer Materials and a return envelope to be mailed to each person who becomes a
holder of record of any 6.50% Convertible Preferred Stock.  The Company and the
Trust acknowledge and agree that you may use the Exchange Offer Materials as
specified herein without assuming any responsibility for independent
verification on your part and the Company and the Trust represent and warrant to
you that you may rely on the accuracy and completeness of any information
delivered to you by or on behalf of the Company or the Trust without assuming
any responsibility for independent verification of such information or without
performing or receiving any appraisal or evaluation of the assets or liabilities
of the Company or the Trust.

     (b)  The Company and the Trust agree to provide you as many copies as you
may reasonably request of the Exchange Offer Materials.  The Company and the
Trust agree that within a reasonable time prior to using or filing with any
federal, state or other governmental agency or instrumentality of the United
States of any Exchange Offer Materials, it will submit copies of such materials
to you and will give reasonable consideration to your and your counsel's
comments, if any, thereon. The Company and the Trust agree prior to the
termination of the Exchange Offer, before amending or supplementing the
Registration Statement or the Prospectus, to furnish copies of drafts to, and
consult with, the Dealer Managers and their counsel within a reasonable time in
advance of filing with the Commission of any amendment or supplement to the
Registration Statement, the Prospectus or the other Exchange Offer Materials.
Neither the Company nor the Trust shall file any such amendment or supplement to
which the Dealer Managers shall reasonably object; provided, however that the
foregoing requirement shall not apply to any of the Company's filings with the
Commission required to be filed pursuant to Section 13(a), 13(c), 14, or 15(d)
of the Exchange Act, copies of which filings the Company will cause to be
delivered to the Dealer Managers promptly after being transmitted for filing
with the Commission.

 
                                                                               4


     (c)  The Company has furnished or shall use its best efforts to furnish to
you, or cause the transfer agents or registrars for the 6.50% Convertible
Preferred Stock to furnish to you, as soon as practicable after the date hereof
(to the extent not previously furnished), cards or lists in reasonable
quantities or copies thereof showing the names of persons who were the holders
of record or, to the extent available, the beneficial owners of the 6.50%
Convertible Preferred Stock as of a recent date, together with their addresses
and the number of shares of 6.50% Convertible Preferred Stock held by them.
Additionally, the Company and the Trust shall update, or cause the transfer
agents or registrars referred to above to update, such information from time to
time during the term of this Agreement as may be reasonably requested by you.
Except as otherwise provided herein, you agree to use such information only in
connection with the Exchange Offer.

     (d)  The Company and the Trust authorize the Dealer Managers to use the
Exchange Offer Materials in connection with the Exchange Offer and for such
period of time as any such materials are required by law to be delivered in
connection therewith.  The Dealer Managers shall not have any obligation to
cause any Exchange Offer Materials to be transmitted generally to the holders of
6.50% Convertible Preferred Stock.

     (e)  Each of the Company and the Trust authorizes the Dealer Managers to
communicate with any information agent (the "Information Agent") or exchange
agent (the "Exchange Agent") appointed by the Company or the Trust to act in
such capacity in connection with the Exchange Offer.  The Company and the Trust
will arrange for the Exchange Agent to advise you daily, as necessary, as to
such matters relating to the Exchange Offer as you may reasonably request.

     (f)  The Company and the Trust agree that any reference to the Dealer
Managers in any Exchange Offer Materials or in any newspaper announcement or
press release or other document or communication is subject to the Dealer
Managers' prior consent, which consent shall not be unreasonably withheld.

          5.  Withdrawal.  In the event that either the Company or the Trust (i)
              ----------                                                        
uses or permits the use of, or files with the Commission, any amendment or
supplement to the Registration Statement and any such document has not been
previously submitted to you for your comment if prior submission is required in
accordance with the provisions of Section 4(b) hereof; or (ii) shall have
breached any of its representations, warranties, agreements or covenants herein,
then you shall be entitled upon written notice to the Company and the Trust to
withdraw as Dealer Managers in connection with the Exchange Offer without any
liability or penalty to you or any other indemnified person (as defined in
Section 11 below) and without loss of any right to indemnification or
contribution provided in Section 11 or to the payment of (x) all fees payable
pursuant to Section 6 with respect to the 6.50% Convertible Preferred Stock
tendered prior to the date of withdrawal and (y) all reasonable expenses payable
hereunder which have accrued through the date of such withdrawal.

          6.  Fees.  (a) The Company shall pay the Dealer Managers a fee of
              ----                                                         
$0.3125 for each share of 6.50% Convertible Preferred Stock validly tendered and
accepted for exchange pursuant to the Exchange Offer.

 
                                                                               5

     (b)  The Company agrees to pay, or cause to be paid to, each Soliciting
Dealer (including a Dealer Manager) whose name has been inserted in the space
provided in the Letter of Transmittal for that purpose a fee (the "Soliciting
Dealer Fee") equal to $1.00 per share of 6.50% Convertible Preferred Stock
validly tendered and accepted for exchange pursuant to the Exchange Offer, to
the extent that the tender of such shares was solicited by such Soliciting
Dealer from beneficial owners of 5,000 or fewer shares of 6.50% Convertible
Preferred Stock.  No Soliciting Dealer Fee shall be payable to any Soliciting
Dealer with respect to the tender of shares of 6.50% Convertible Preferred Stock
by the holder of record, for the benefit of the beneficial owner, unless the
beneficial owner has designated such Soliciting Dealer.  No Soliciting Dealer
Fee shall be payable in respect to shares of 6.50% Convertible Preferred Stock
beneficially owned by a Soliciting Dealer or registered in the name of a
Soliciting Dealer, unless such shares are held by such Soliciting Dealer as
nominee and are being tendered for the benefit of such a beneficial owner.  No
Soliciting Dealer Fee shall be payable to a Soliciting Dealer if such Soliciting
Dealer is required for any reason to transfer any portion of such fee to a
tendering holder (other than itself).  The Soliciting Dealer Fee shall be paid
to the Soliciting Dealers within one week of the consummation of the Exchange
Offer.

          7.  Expenses and Reimbursement of Expenses.  The Company and the
              --------------------------------------                      
Trust, jointly and severally, agree to pay the costs and expenses incident to
the performance of the obligations hereunder, including, without limitation, all
costs and expenses (i) incurred by dealers and brokers (including yourselves),
commercial banks, trust companies and nominees for their customary mailing and
handling expenses incurred in forwarding the Exchange Offer Materials to their
customers, (ii) incident to the preparation, issuance, execution and delivery of
the Trust Convertible Preferred Securities, (iii) incident to the preparation,
printing and filing under the Securities Act of the Registration Statement, the
Prospectus (including, without limitation, in each case all exhibits, amendments
and supplements thereto), (iv) incurred in connection with the registration or
qualification of the Trust Convertible Preferred Securities under the laws of
such jurisdictions as the Dealer Managers may designate (including, without
limitation, reasonable fees of counsel for the Dealer Managers and its
reasonable disbursements), (v) in connection with the printing (including word
processing and duplication costs) and delivery of all Exchange Offer Materials
(including, without limitation, any preliminary and supplemental blue sky
memoranda) including, without limitation, mailing and shipping; (vi) the fees of
the New York Stock Exchange, Inc. (the "NYSE") in connection with the listing of
the Trust Convertible Preferred Securities; (vii) all advertising expenses
related to the Exchange Offer and the fees and expenses of the Exchange Agent
and the Information Agent; (viii) the fees and disbursements of Morris, Nichols,
Arsht & Tunnell, Delaware counsel to the Company and the Trust, Miller &
Chevalier, Chartered, special tax counsel to the Company and the Trust, and
Price Waterhouse, LLP, auditors to the Company; and (ix) the fees and expenses
of the trustees of the Trust (the "Trustees of the Trust"), including the
Institutional Trustee, and the Indenture Trustee and the Guarantee Trustee.  In
addition, the Company and the Trust, jointly and severally, agree to reimburse
the reasonable out-of-pocket expenses of the Dealer Managers in connection with
the Exchange Offer (including, without limitation, the reasonable legal fees and
expenses of counsel to the Dealer Managers in connection with the Exchange
Offer).

 
                                                                               6


          8.  Representations, Warranties and Certain Agreements of the Company
              -----------------------------------------------------------------
and the Trust.  Each of the Company and the Trust jointly and severally
- -------------                                                          
represents and warrants to you, and agrees with you, that as of the Commencement
Date and at all times on or prior to the date when the Exchange Offer is
consummated (the "Closing Date"):

          (a)  the Registration Statement has become effective; no stop order
     suspending the effectiveness of the Registration Statement is in effect,
     and no proceedings for such purpose are pending before or threatened by
     the Commission;

          (b)  (i) the Exchange Offer Materials, including the Registration
     Statement and Prospectus, comply and, as amended or supplemented, if
     applicable, will comply in all material respects with the Securities Act
     and the Exchange Act and the applicable rules and regulations of the
     Commission thereunder; (ii) the Registration Statement, when it became
     effective, did not contain and as amended or supplemented, if applicable,
     will not contain, any untrue statement of a material fact or omit to state
     a material fact required to be stated therein or necessary to make the
     statements therein not misleading; and (iii) none of the Prospectus or
     other Exchange Offer Materials contains, and, as amended or supplemented,
     if applicable, will contain any untrue statement of a material fact or omit
     to state a material fact necessary to make the statements therein, in the
     light of the circumstances under which they were made, not misleading;
     except that the representations and warranties set forth in this Section
     8(b) do not apply (A) to statements or omissions in the Exchange Offer
     Materials, the Registration Statement or the Prospectus based upon
     information relating to the Dealer Managers furnished to the Company in
     writing by the Dealer Managers expressly for use therein or (B) to that
     part of the Registration Statement that constitutes the Statements of
     Eligibility and Qualification (Form T-1) under the Trust Indenture Act of
     1939, as amended (the "Trust Indenture Act"), of the Institutional Trustee,
     the Indenture Trustee or the Guarantee Trustee;

          (c)  the Company has the corporate power and authority to execute,
     deliver and perform its obligations under this Agreement, the Declaration,
     the Indenture and the Guarantee; and the Trust has the business trust power
     and authority to execute, deliver and perform its obligations under this
     Agreement;

          (d) this Agreement has been duly and validly authorized, executed and
     delivered by the Company and is a valid and binding obligation of the
     Company;

          (e) this Agreement has been duly and validly authorized, executed and
     delivered by the Trust and is a valid and binding obligation of the Trust;

          (f)  the Prospectus as amended or supplemented in relation to the
     Exchange Offer shall have been filed with the Commission pursuant to Rule
     424(b), if required, within the applicable time period prescribed for such
     filing by the rules and regulations under the Securities Act;

 
                                                                               7

          (g)  on or prior to the Commencement Date, an agreement with the
     Exchange Agent relating to the Exchange Offer (the "Exchange Agency
     Agreement") shall be in full force and effect;

          (h)  on or prior to the Commencement Date, an agreement with the
     Information Agent relating to the Exchange Offer shall be in full force and
     effect;

          (i)  the Trust Convertible Preferred Securities to be issued pursuant
     to the Exchange Offer will be duly authorized by the Declaration upon
     execution and delivery of the Declaration in the form filed as an exhibit
     to the Registration Statement, and, when issued and delivered in accordance
     with the terms of this Agreement in exchange for 6.50% Convertible
     Preferred Stock pursuant to the Exchange Offer, will be validly issued and
     (subject to the terms of the Declaration) fully paid and nonassessable
     undivided beneficial ownership interests in the assets of the Trust, not
     subject to any preemptive or similar rights, and will conform in all
     material respects to all statements relating thereto contained in the
     Prospectus.  Holders of Trust Convertible Preferred Securities will be
     entitled, subject to the terms of the Declaration, to the same limitation
     of personal liability extended to stockholders of private corporations for
     profit;

          (j)  the Declaration and the Guarantee have been duly authorized by
     the Company and, as of the Closing Date, will have been duly executed and
     delivered by the Company; assuming due authorization, execution and
     delivery of the Declaration by the Trustees of the Trust, the Declaration
     will, as of the Closing Date, be valid and binding on, and enforceable
     against, the Company in accordance with its terms, except as enforceability
     may be limited by bankruptcy, insolvency, reorganization and other similar
     laws relating to or affecting creditors' rights generally, by general
     equitable principles (regardless of whether such enforceability is
     considered in a proceeding in equity or at law) and an implied covenant of
     good faith and fair dealing; the Guarantee, as of the Closing Date, will be
     valid and binding on, and enforceable against, the Company in accordance
     with its terms, except as enforceability may be limited by bankruptcy,
     insolvency, reorganization and other similar laws relating to or affecting
     creditors' rights generally, by general equitable principles (regardless of
     whether such enforceability is considered in a proceeding in equity or at
     law) and an implied covenant of good faith and fair dealing; the
     Declaration and the Guarantee have been duly qualified under the Trust
     Indenture Act and will conform in all material respects to all statements
     relating thereto contained in the Prospectus;

          (k)  the Indenture has been duly qualified under the Trust Indenture
     Act and, assuming due authorization, execution and delivery of the
     Indenture by the Indenture Trustee, when executed and delivered by the
     Company, will be valid and binding on, and enforceable against, the Company
     in accordance with its terms, except as enforceability may be limited by
     bankruptcy, insolvency, reorganization and other similar laws relating to
     or affecting creditors' rights generally, by general equitable principles
     (regardless of whether such enforceability is considered in a proceeding in
     equity or at law) and an implied covenant of good faith and fair dealing;

 
                                                                               8


          (l)  the Debentures to be deposited in the Trust as trust assets in
     connection with the Exchange Offer have been duly authorized, and, assuming
     due authorization, execution and delivery of the Indenture by the Indenture
     Trustee, when executed and delivered by the Company to the Indenture
     Trustee, and when executed and authenticated in accordance with the
     provisions of the Indenture and delivered to the Trust pursuant to the
     terms of the Exchange Offer, will be entitled to the benefits of the
     Indenture and will be valid and binding on, and enforceable against, the
     Company in accordance with their terms, except as enforceability may be
     limited by bankruptcy, insolvency, reorganization and other similar laws
     relating to or affecting creditors' rights generally, by general equitable
     principles (regardless of whether such enforceability is considered in a
     proceeding in equity or at law) and an implied covenant of good faith and
     fair dealing;

          (m)  the Company has been duly incorporated and is validly existing as
     a corporation in good standing under the laws of the State of Delaware,
     with corporate power and authority to own its properties and conduct its
     business as described in the Prospectus, and has been duly qualified as a
     foreign corporation for the transaction of business and is in good standing
     under the laws of each other jurisdiction in which it owns or leases
     properties, or conducts any business, so as to require such qualification,
     or is subject to no material liability or disability by reason of the
     failure to be so qualified in any such jurisdiction; and each of its
     subsidiaries has been duly incorporated and is validly existing as a
     corporation in good standing under the laws of its jurisdiction of
     incorporation; and Marathon Oil Company ("Marathon") has been duly
     incorporated and is validly existing as a corporation in good standing
     under the laws of the State of Ohio;

          (n)  the Trust has been duly created and is validly existing as a
     business trust in good standing under the Delaware Act, is and will be
     treated as a grantor trust for Federal income tax purposes under existing
     law, has the business trust power and authority to conduct its business
     as presently conducted and as described in the Prospectus, and is not
     required to be authorized to do business in any other jurisdiction;

          (o)  the Company and its subsidiaries have good and marketable title
     in fee simple to all real property and good and marketable title to all
     personal property owned by them which is material to the business of the
     Company or the U.S. Steel Group (as defined in the Prospectus), in each
     case free and clear of all liens, encumbrances and defects except such as
     are described in the Prospectus or such as do not materially affect the
     value of such property and do not interfere with the use made and proposed
     to be made of such property by the Company and its subsidiaries; and any
     real property and buildings held under lease by the Company and its
     subsidiaries which are material to the business of the Company or the U.S.
     Steel Group are held by them under valid, subsisting and enforceable leases
     with such exceptions as are not material and do not interfere with the use
     made and proposed to be made of such property and buildings by the Company
     and its subsidiaries;

 
                                                                               9


          (p)  the Company has an authorized capitalization as set forth in the
     Prospectus, and all of the issued shares of capital stock of the Company
     have been duly and validly authorized and issued, are fully paid and
     nonassessable and conform in all material respects to the description
     thereof contained in the Prospectus; and all of the issued shares of
     capital stock of Marathon have been duly and validly authorized and issued,
     are fully paid and nonassessable and are owned directly or indirectly by
     the Company, free and clear of all liens, encumbrances, equities or claims;

          (q)  the Debentures are convertible into shares of Steel Stock in
     accordance with the terms of the Indenture; all shares of Steel Stock
     issuable upon conversion of the Debentures have been duly and validly
     authorized and reserved for issuance upon such conversion and, when issued
     and delivered in accordance with the terms of the Indenture, will be duly
     and validly issued, fully paid and nonassessable and will conform to the
     description thereof contained in the Prospectus; and the holders of
     outstanding capital stock of the Company are not entitled to preemptive or
     other rights afforded by the Company to subscribe for the shares of Steel
     Stock issuable upon conversion of the Debentures;

          (r)  neither the Company nor any of its subsidiaries has sustained
     since the date of the latest audited financial statements incorporated by
     reference in the Prospectus any loss or interference with its business
     which is material to the business of the Company or the U.S. Steel Group
     from fire, explosion, flood or other calamity, whether or not covered by
     insurance, or from any labor dispute or court or governmental action, order
     or decree, otherwise than as set forth or contemplated in the Prospectus;
     and, since such date, there has not been any material change in the capital
     stock or long-term debt of the Company or Marathon or any material adverse
     change, or any development likely to involve a prospective material adverse
     change, in or affecting the management, consolidated financial position,
     stockholders' equity or results of operations of the Company and its
     subsidiaries or the financial position, stockholders' equity or results of
     operations of the U.S. Steel Group, otherwise than as set forth or
     contemplated in the Prospectus;

          (s)  other than as set forth in the Prospectus, there are no legal or
     governmental proceedings pending to which the Company or any of its
     subsidiaries is a party or of which any property of the Company or any of
     its subsidiaries is the subject which, if determined adversely to the
     Company or any of its subsidiaries, would have a material adverse effect on
     the consolidated financial position, stockholders' equity or results of
     operations of the Company and its subsidiaries or the financial position,
     stockholders' equity or results of operations of the U.S. Steel Group, and,
     to the best of the Company's knowledge, no such proceedings are threatened
     by governmental authorities or others;

          (t)  the financial statements (including the related notes and
     supporting schedules) incorporated by reference in the Prospectus present
     fairly, in all material respects, the financial position and results of
     operations of the entities purported to be

 
                                                                              10

     shown thereby, at the dates and for the periods indicated, and have been
     prepared in conformity with generally accepted accounting principles
     applied, except as noted therein, on a consistent basis throughout the
     periods involved;

          (u)  to the best knowledge of the Company, Price Waterhouse, who have
     certified certain financial statements of the Company and its subsidiaries,
     are independent public accountants as required by the Securities Act and
     the rules and regulations of the Commission thereunder and were independent
     public accountants as required by the Securities Act and the rules and
     regulations of the Commission thereunder during the periods covered by the
     financial statements on which they reported incorporated by reference in
     the Prospectus;

          (v)  the Company and the Trust are not, and after giving effect to the
     consummation of the Exchange Offer will not be, an "investment company" or
     an entity "controlled" by an "investment company", as such terms are
     defined in the Investment Company Act of 1940, as amended.

          (w)  except with respect to the Company's Restated Rights Agreement
     (as defined in the Prospectus), there are no contracts, agreements or
     understandings between the Company and any person granting such person the
     right to require the Company to file a registration statement under the
     Securities Act with respect to any securities of the Company owned or to be
     owned by such person or to require the Company to include such securities
     in the securities registered pursuant to the Registration Statement or in
     any securities being registered pursuant to any other registration
     statement filed by the Company under the Securities Act;

          (x)  there are no contracts or other documents which are required to
     be described in the Prospectus or filed as exhibits to the Registration
     Statement by the Securities Act or by the rules and regulations of the
     Commission thereunder which have not been described in the Prospectus or
     filed as exhibits to the Registration Statement or incorporated therein by
     reference as permitted by the rules and regulations of the Commission
     thereunder;

          (y)  no labor disturbance by the employees of the Company exists or,
     to the knowledge of the Company, is imminent which is likely to have a
     material adverse effect on the consolidated financial position,
     stockholders' equity or results of operations of the Company and its
     subsidiaries or the financial position, stockholders' equity or results of
     operations of the U.S. Steel Group;

          (z)  the execution and delivery by the Company and the Trust of, and
     the performance by the Company and the Trust of their obligations under,
     this Agreement, the execution and delivery by the Company of, and the
     performance by the Company of its obligations under, the Declaration, the
     Indenture and the Guarantee, the issuance and delivery by the Trust of the
     Trust Convertible Preferred Securities and the consummation of the Exchange
     Offer and the fulfillment of the terms herein and therein contemplated will
     not conflict with or result in a breach or violation of any of

 
                                                                              11


     the terms or provisions of, or constitute a default under, any indenture,
     mortgage, deed of trust, loan agreement or other agreement or instrument to
     which the Trust, the Company or Marathon is a party or by which the Trust,
     the Company or Marathon is bound or to which any of the property or assets
     of the Trust, the Company or Marathon is subject, nor will such action
     result in any violation of the provisions of the charter or by-laws of the
     Company or Marathon or any statute or any order, rule or regulation of any
     court or governmental agency or body having jurisdiction over the Trust or
     the Company or Marathon or any of their properties; and no consent,
     approval, authorization, order, registration or qualification of or with
     any such court or governmental agency or body is required for the
     performance by the Company and the Trust of their obligations under this
     Agreement and the issue and exchange of the Trust Convertible Preferred
     Securities by the Company pursuant to the Exchange Offer, the issuance of
     the Debentures by the Company pursuant to the Indenture, the performance by
     the Company under the Guarantee and the issuance of the shares of Steel
     Stock issuable upon the conversion of the Trust Convertible Preferred
     Securities or the consummation by the Company of the transactions
     contemplated by this Agreement, except for the (i) the listing of the Trust
     Convertible Preferred Securities and shares of Steel Stock issuable upon
     conversion of the Trust Convertible Preferred Securities on the NYSE, (ii)
     the registration under the Securities Act of the Trust Convertible
     Preferred Securities, the Debentures, the Guarantee and the shares of Steel
     Stock issuable upon conversion of the Debentures, (iii) the registration of
     the Trust Convertible Preferred Securities under the Exchange Act and (iv)
     such consents, approvals, authorizations, registrations or qualifications
     as may be required under state securities or Blue Sky laws or the
     securities laws of non-U.S. jurisdictions in connection with the issue and
     exchange of the Trust Convertible Preferred Securities and the issuance of
     the shares of Steel Stock issuable upon conversion of the Trust Convertible
     Preferred Securities;

          (aa)  neither the Company nor any of its subsidiaries (i) is in
     violation of its charter or by-laws, (ii) is in default in any material
     respect, and no event has occurred which, with notice or lapse of time or
     both, would constitute such a default, in the due performance or observance
     of any term, covenant or condition contained in any material agreement,
     indenture or instrument, (iii) is in violation in any respect material to
     the business of the Company, Marathon or the U.S. Steel Group of any law,
     ordinance, governmental rule, regulation or court decree to which it or its
     property may be subject or has failed to obtain any material license,
     permit, certificate, franchise or other governmental authorization or
     permit necessary to the ownership of its property or to the conduct of its
     business or (iv) is in violation of Section 517.075 of the Florida
     Securities and Investor Protection Act.

          9.  Conditions to Dealer Managers' Obligations.  The several 
              ------------------------------------------                     
obligations of the Dealer Managers hereunder are subject, as of the Commencement
Date and at all times on or prior to the Closing Date, to the accuracy of the
representations and warranties on the part of the Company and the Trust herein,
to the accuracy of the statements of officers of the Company and of the Trust
made pursuant to the provisions hereof, to the performance by the Company

 
                                                                              12


and the Trust of their respective obligations hereunder and to the following
additional conditions:

          (a)  on the Commencement Date and the Closing Date, you shall have
     received a certificate, dated such date and signed by an authorized officer
     of the Company and an authorized officer of the Trust acceptable to you, to
     the effect set forth in clauses (i) and (j) below, and to the effect that
     the representations and warranties of the Company and the Trust, as the
     case may be, contained in this Agreement are true and correct as of the
     Closing Date and that the Company and the Trust, as the case may be, have
     performed all of their respective obligations to be performed hereunder on
     or prior to the Closing Date. The officers signing and delivering such
     certificate on behalf of the Company and the Trust may rely upon the best
     of their knowledge as to proceedings threatened;

          (b)  each of the Company and the Trust shall have furnished to you on
     each of the Commencement Date and the Closing Date, such additional
     certificates or other documents as are typically delivered in connection
     with a transaction of this type and which you may reasonably request;

          (c)  on the Closing Date and, except as to clauses (xiii), (xiv), and
     (xv), on the Commencement Date, the Dealer Managers shall have received a
     signed opinion of Dan D. Sandman, Esq., General Counsel of the Company or
     John A. Hammerschmidt, Assistant General Counsel and Assistant Secretary of
     the Company, to the effect that:

                    (i)   the Company has been duly incorporated and is validly
          existing as a corporation in good standing under the laws of the State
          of Delaware, with corporate power and authority to own its properties
          and conduct its business as described in the Prospectus;

                    (ii)   the Company has been duly qualified as a foreign
          corporation for the transaction of business and is in good standing
          under the laws of each other jurisdiction in which it owns or leases
          properties, or conducts any business, so as to require such
          qualification, or is subject to no material liability or disability by
          reason of failure to be so qualified in any such jurisdiction;

                    (iii)    Marathon has been duly incorporated and is validly
          existing as a corporation in good standing under the laws of the State
          of Ohio; and all of the issued shares of capital stock of Marathon
          have been duly and validly authorized and issued, are fully paid and
          non-assessable, and are owned directly or indirectly by the Company,
          free and clear of all liens, encumbrances, equities or claims;

                    (iv)   the Company has an authorized capitalization as set
          forth in the Prospectus, and all of the issued shares of capital stock
          of the Company have been duly and validly authorized and issued and
          are fully paid and nonassessable; and all shares of Steel Stock
          issuable upon conversion of the

 
                                                                              13

          Trust Convertible Preferred Securities have been duly and validly
          authorized and reserved for issuance upon such conversion and, when
          issued and delivered in accordance with the terms of the Indenture,
          will be duly and validly issued, fully paid and nonassessable and will
          conform in all material respects to the description thereof contained
          in the Prospectus;

                    (v)   there are no preemptive or other rights to subscribe
          for or to purchase, nor any restriction upon the voting or transfer
          of, the Steel Stock issuable upon conversion of the Debentures
          pursuant to the Company's Restated Certificate of Incorporation or by-
          laws or any agreement or other instrument known to such counsel, other
          than certain rights to subscribe for or to purchase shares of Steel
          Stock pursuant to the Restated Rights Agreement, employee stock option
          plans or employee benefit plans and certain restrictions upon the
          transfer of the Steel Stock pursuant to the Company's 1990 Stock Plan;

                    (vi)   to the best of such counsel's knowledge and other
          than as set forth in the Prospectus, there are no legal or
          governmental proceedings pending to which the Company or any of its
          subsidiaries is a party or of which any property of the Company or any
          of its subsidiaries is the subject which, if determined adversely to
          the Company or any of its subsidiaries, would have a material adverse
          effect on the consolidated financial position, stockholders' equity or
          results of operations of the Company and its subsidiaries or the
          financial position, stockholders' equity or results of operations of
          the U.S. Steel Group; and, to the best of such counsel's knowledge, no
          such proceedings are threatened or contemplated by governmental
          authorities or threatened by others;

                    (vii)    the Registration Statement was declared effective
          under the Securities Act as of the date and time specified in such
          opinion, the Prospectus was filed with the Commission pursuant to the
          subparagraph of Rule 424(b) of the rules and regulations of the
          Commission specified in such opinion on the date specified therein and
          no stop order suspending the effectiveness of the Registration
          Statement has been issued and, to the knowledge of such counsel, no
          proceeding for that purpose is pending or threatened by the
          Commission;

                    (viii)    the documents incorporated by reference in the
          Prospectus, and, in the case of such opinion delivered on the Closing
          Date, any further amendment or supplement thereto made by the Company
          prior to the Closing Date (other than the financial statements and
          related schedules therein, as to which such counsel need express no
          opinion), when they became effective or were filed with the
          Commission, as the case may be, complied as to form in all material
          respects with the requirements of the Securities Act or the Exchange
          Act, as applicable, and the rules and regulations of the Commission
          thereunder; and such counsel has no reason to believe that any of such
          documents, when such documents became effective or were so filed, as
          the case may be, contained an untrue statement of a material fact or
          omitted to state a material

 
                                                                              14


          fact necessary in order to make the statements therein, in the light
          of the circumstances under which they were made when such documents
          were so filed, not misleading;

                    (ix)   the Registration Statement and the Prospectus, and,
          in the case of such opinion delivered on the Closing Date, any further
          amendments and supplements thereto made by the Company prior to such
          Closing Date (other than the financial statements and related
          schedules therein, as to which such counsel need express no opinion),
          comply as to form in all material respects with the requirements of
          the Securities Act and the rules and regulations thereunder; he has no
          reason to believe that, as of its effective date, the Registration
          Statement, or, in the case of such opinion delivered on the Closing
          Date, any further amendment thereto made by the Company prior to such
          Closing Date (other than the financial statements and related
          statements and related schedules therein, as to which such counsel
          need express no opinion), contained an untrue statement of a material
          fact or omitted to state a material fact required to be stated therein
          or necessary to make the statements therein not misleading or that, as
          of its date and the date of such opinion, the Prospectus, or, in the
          case of such opinion delivered on the Closing Date, any further
          amendment or supplement thereto made by the Company prior to such
          Closing Date (other than the financial statements and related
          schedules therein, as to which such counsel need express no opinion),
          contained an untrue statement of a material fact or omitted to state a
          material fact necessary to make the statements therein, in the light
          of the circumstances under which they were made, not misleading (such
          counsel may base such belief on the fact that he is General Counsel of
          the Company and supervises attorneys in the Law Department of the
          Company who have acted as counsel to the Company in connection with
          the preparation of the Registration Statement); and he does not know
          of any amendment to the Registration Statement required to be
          filed or of any contracts or other documents of a character required
          to be filed as an exhibit to the Registration Statement or required to
          be incorporated by reference into the Prospectus or required to be
          described in the Registration Statement or the Prospectus which are
          not filed or incorporated by reference or described as required;

               (x)  this Agreement has been duly authorized, executed and
          delivered by the Company;

               (xi)  the Exchange Agency Agreement has been duly authorized,
          executed and delivered by the Company;

               (xii)  the execution and delivery by the Company and the Trust
          of, and the performance by the Company and the Trust of their
          obligations under, this Agreement, the execution and delivery by the
          Company of, and the performance by the Company of its obligations
          under, the Declaration, the Indenture and the Guarantee, the issuance
          and delivery by the Trust of the

 
                                                                              15


          Trust Convertible Preferred Securities and the consummation of the
          Exchange Offer and the fulfillment of the terms herein contemplated
          will not conflict with or result in a breach or violation of any of
          the terms or provisions of, or constitute a default under, any
          indenture, mortgage, deed of trust, loan agreement or other agreement
          or instrument to which the Trust, the Company or Marathon is a party
          or by which the Trust, the Company or Marathon is bound or to which
          any of the property or assets of the Trust, the Company or Marathon is
          subject, nor will such action result in any violation of the
          provisions of the charter or by-laws of the Company or Marathon or any
          statute or any order, rule or regulation of any court or governmental
          agency or body having jurisdiction over the Trust or the Company or
          Marathon or any of their properties;

               (xiii)  the Guarantee has been duly authorized, executed and
          delivered and is a valid and binding agreement of the Company,
          enforceable in accordance with its terms except as the enforcement
          thereof may be limited by bankruptcy, insolvency, reorganization,
          moratorium, fraudulent transfer or other similar laws relating to or
          affecting the enforcement of creditors' rights generally, general
          principles of equity (regardless of whether enforceability is
          considered in a proceeding at law or in equity) and any implied
          covenant of good faith and fair dealing;

               (xiv)  the Declaration has been duly authorized, executed and
          delivered by the Company;

               (xv)  the Indenture has been duly qualified under the Trust
          Indenture Act, has been duly authorized, executed and delivered by the
          Company and, assuming due authorization, execution and delivery of the
          Indenture by the Indenture Trustee, constitutes a valid and binding
          agreement of the Company enforceable in accordance with its terms
          except as the enforcement thereof may be limited by bankruptcy,
          insolvency, reorganization, moratorium, fraudulent transfer or other
          similar laws relating to or affecting the enforcement of creditors'
          rights generally, general principles of equity (regardless of whether
          enforceability is considered in a proceeding at law or in equity) and
          an implied covenant of good faith and fair dealing;

               (xvi)  the Debentures when executed and authenticated in
          accordance with the provisions of the Indenture, assuming due
          authorization, execution and delivery of the Indenture by the
          Indenture Trustee, and delivered pursuant to the terms of the Exchange
          Offer will be entitled to the benefits of the Indenture and will be
          valid and binding obligations of the Company enforceable in accordance
          with their terms except as the enforcement thereof may be limited by
          bankruptcy, insolvency, reorganization, moratorium, fraudulent
          transfer or other similar laws relating to or affecting the
          enforcement of creditors' rights generally, general principles of
          equity (regardless of whether enforceability is
 

 
                                                                              16

          considered in a proceeding at law or in equity) and an implied
          covenant of good faith and fair dealing;

                    (xvii)    the statements made in the Prospectus under the
          captions, "Description of the Trust Convertible Preferred Securities,"
          "Description of the 6.50% Convertible Preferred Stock," "Description
          of the Convertible Debentures," "Description of the Guarantee," and
          "Description of Capital Stock and Amended and Restated Rights Plan"
          insofar as such statements constitute a summary of the legal matters,
          documents or proceedings referred to therein, fairly present the
          information called for with respect to such legal matters, documents
          and proceedings and are accurate in all material respects;

               (xviii)  neither the Company nor the Trust is, or after giving
          effect to the consummation of the Exchange Offer, will be, an
          "investment company" as such terms are defined in the Investment
          Company Act of 1940, as amended;

               (xix)  no consent, approval, authorization, order, registration
          or qualification of or with any such court
          or governmental agency or body is required for the performance by the
          Company and the Trust of their obligations under this Agreement and
          the issue and exchange of the Trust Convertible Preferred Securities
          by the Company pursuant to the Exchange Offer, the issuance of the
          Debentures by the Company pursuant to the Indenture, the performance
          by the Company under the Guarantee and the issuance of the shares of
          Steel Stock issuable upon the conversion of the Debentures or the
          consummation by the Company of the transactions contemplated by this
          Agreement, except for such consents, approvals, authorizations,
          registrations or qualifications which have been obtained by the
          Company or as may be required under state securities or Blue Sky laws
          or the securities laws of non-U.S. jurisdictions in connection with
          the issue and exchange of the Trust Convertible Preferred Securities
          and the shares of Steel Stock issuable upon conversion of the Trust
          Convertible Preferred Securities;

                    (xx)   to the best of such counsel's knowledge, other than
          with respect to the Restated Rights Agreement, there are no contracts,
          agreements or understandings between the Company and any person
          granting such person the right to require the Company to file a
          registration statement under the Securities Act with respect to any
          securities of the Company owned or to be owned by such person or to
          require the Company to include such securities in the securities
          registered pursuant to the Registration Statement or in any securities
          being registered pursuant to any other registration statement filed by
          the Company under the Securities Act;

          In rendering such opinion, such counsel may state that his opinion is
     limited to matters governed by the Federal laws of the United States of
     America, the laws of the State of Ohio and the General Corporation Law of
     the State of Delaware and that such counsel is not admitted in the State of
     Delaware.  To the extent such opinion relates to

 
                                                                              17


     the law of the State of New York (which law the Indenture, this Agreement
     and the Guarantee state to be the governing law thereof), such counsel may
     state that he assumes that the laws of the State of Ohio are the same as
     those of the State of New York. As to matters of fact, to the extent deemed
     proper, such counsel may rely on certificates of responsible officers of
     the Company and public officials.

          (d)  on the Commencement Date and the Closing Date (except with
     respect to paragraph (iv) which will be given only on the Closing Date),
     the Dealer Managers shall have received a signed opinion of Morris,
     Nichols, Arsht & Tunnell, Delaware counsel for the Company and the Trust,
     dated as of such date, to the effect that:

               (i)  the Trust has been duly created and is validly existing in
          good standing as a business trust under the Delaware Act, is and has
          the business trust power and authority to conduct its business as
          described in the Prospectus;

               (ii)  assuming due authorization, execution and delivery of the
          Declaration by the Company and the Trustees, the Declaration is a
          valid and binding agreement of the Company and the Trustees,
          enforceable in accordance with its terms except as the enforcement
          thereof may be limited by (i) bankruptcy, insolvency, reorganization,
          moratorium, fraudulent transfer or other similar laws relating to or
          affecting the enforcement of creditors' rights generally, (ii) general
          principles of equity (regardless of whether enforceability is
          considered in a proceeding at law or in equity) and (iii)
          considerations of public policy or the effect of applicable law
          relating to fiduciary duties;

               (iii)  assuming due authorization, execution and delivery of the
          Declaration by the Company and the Trustees, the execution and
          delivery of this Agreement by the Trust, and the performance by the
          Trust of its obligations hereunder, will have been duly authorized by
          all requisite business trust action on the part of the Trust;

               (iv)  the Trust Convertible Preferred Securities and the Trust
          Common Securities have been duly authorized by the Declaration and are
          duly and validly issued and, subject to the terms of the Declaration,
          fully paid and nonassessable beneficial ownership interests in the
          assets of the Trust.  The holders of Preferred Securities and the
          Trust Common Securities will be, subject to the terms of the
          Declaration, entitled to the same limitation of personal liability
          extended to stockholders of private corporations for profit organized
          under the General Corporation Law of the State of Delaware; and

               (v)  under the Declaration and the Delaware Act, the issuance of
          the Trust Convertible Preferred Securities and the Trust Common
          Securities is not subject to preemptive rights.

          (e)  The Dealer Managers shall have received a signed opinion of
     Miller & Chevalier, Chartered, tax counsel for the Company and the Trust,
     dated as of the

 
                                                                              18

     Commencement Date and the Closing Date to the effect that the Trust will be
     treated as a grantor trust for Federal income tax purposes under existing
     law and covering the statements made in the

          (f)  The Dealer Managers shall have received the opinion of Simpson
     Thacher & Bartlett, counsel for the Dealer Managers, dated as of the
     Commencement Date and the Closing Date, covering the incorporation and
     legal existence of the Company, the issuance and delivery of the Trust
     Convertible Preferred Securities, this Agreement, the Registration
     Statement, the Prospectus and such other related matters as the Dealer
     Managers may require.  In giving such opinion such counsel may rely, as to
     all matters governed by the laws of jurisdictions other than the law of the
     State of New York, and the Federal law of the United States and the General
     Corporation Law of the State of Delaware, upon the opinions of counsel
     satisfactory to the Dealer Managers;

          (g)  the Company and the Trust will also furnish to you from time to
     time (including on the Closing Date), up to the last acceptance of 6.50%
     Convertible Preferred Stock pursuant to the Exchange Offer, any further
     opinion of counsel, satisfactory to your counsel, as you may reasonably
     request;

          (h)  you shall have received, on the Commencement Date and the Closing
     Date, letters, dated the Commencement Date and the Closing Date, as the
     case may be, reasonably satisfactory to you of Price Waterhouse, LLP,
     containing statements and information of the type ordinarily included in
     accountants' "comfort letters" with respect to the consolidated financial
     statements of the Company and certain financial information contained in
     the Registration Statement and the Prospectus;

          (i)  (i)  neither the Company nor any of its subsidiaries shall have
     sustained since the date of the latest audited financial statements
     incorporated by reference in the Prospectus any loss or interference with
     its business from fire, explosion, flood or other calamity, whether or not
     covered by insurance, or from any labor dispute or court or governmental
     action, order or decree, otherwise than as set forth or contemplated in the
     Prospectus, and (ii) since such date there shall not have been any change
     in the capital stock or long-term debt of the Company or any of its
     subsidiaries or any change, or any development likely to involve a
     prospective change, in or affecting the management, consolidated financial
     position, stockholders' equity or results of operations of the Company and
     its subsidiaries or the financial position, stockholders' equity or results
     of operations of the U.S. Steel Group, otherwise than as set forth or
     contemplated in the Prospectus, the effect of which, in any such case
     described in clause (i) or (ii), is in your judgment so
     material and adverse as to make it impracticable or inadvisable to proceed
     with the Exchange Offer on the terms and in the manner contemplated in the
     Prospectus;

          (j)  there shall not have occurred any of the following:  (i) a
     suspension or material limitation in trading in securities generally on the
     NYSE; (ii) a suspension or material limitation in trading of the Company's
     securities on the NYSE; (iii) a general

 
                                                                              19

     moratorium on commercial banking activities in New York declared by either
     Federal or New York State authorities; (iv) the engagement by the United
     States in hostilities, the escalation in hostilities involving the United
     States or the declaration of a national emergency or war by the United
     States; or (v) the outbreak of hostilities or the escalation of hostilities
     or the declaration of a national emergency or war or a material adverse
     change in national or international economic, political or financial
     conditions, national or international equity markets or currency exchange
     rates or controls which, in your judgment, makes it impracticable or
     inadvisable to proceed with the Exchange Offer on the terms and in the
     manner contemplated in the Prospectus;

          (k)  at the Closing Date, the Trust Convertible Preferred Securities
     shall have been duly listed, subject to official notice of issuance, on the
     NYSE; and

          (l)  on or after the date hereof (i) no downgrading shall have
     occurred in the rating accorded the Company's senior unsecured debt
     securities or preferred stock by Standard & Poor's Corporation or Moody's
     Investors Services, Inc. and (ii) no such organization shall have publicly
     announced that it has under surveillance or review, with possible negative
     implications, the rating of any of the Company's senior unsecured debt
     securities or preferred stock.

          The Company and the Trust will furnish you with such executed or
conformed copies of such opinions, certificates, letters and documents as you
may reasonably request.

          10.  Covenants of the Company and the Trust.  Each of the Company and
               --------------------------------------                          
the Trust covenants with the Dealer Managers:

          (a)  To use its best efforts to cause the Registration Statement,
     including any post-effective amendment thereto, to become effective
     promptly and will notify the Dealer Managers immediately, (i) when any
     post-effective amendment to the Registration Statement shall have become
     effective, or any supplement to the Prospectus or any amended Prospectus or
     any amended or additional Exchange Offer Materials shall have been filed,
     (ii) of the receipt of any comments or inquiries from the Commission
     relating to the Exchange Offer, (iii) of any request by the Commission to
     amend the Registration Statement or amend or supplement the Prospectus or
     the other Exchange Offer Materials or for additional information relating
     to the Exchange Offer and (iv) of (A) the issuance by the Commission of any
     stop order suspending the use of any Exchange Offer Materials or any
     qualification of the Trust Convertible Preferred Securities for offering or
     sale in connection with the Exchange Offer in any jurisdiction, (B) the
     institution or threatening of any proceedings for any of such purposes or
     (C) the occurrence of any event which could cause the Company or the Trust
     to withdraw, rescind, terminate or modify the Exchange Offer or would
     permit the Company or the Trust to exercise any right not to accept 6.50%
     Convertible Preferred Stock tendered pursuant to the Exchange Offer. Each
     of the Company and the Trust will use its best efforts to prevent the
     issuance of any such stop order, the issuance of any order preventing or
     suspending such use and the suspension of any such qualification and, if
     any such order is issued or

 
                                                                              20

     qualification suspended, to obtain the lifting of such order or suspension
     at the earliest practicable time;

          (b)  to comply in all material respects with the Securities Act, the
     Exchange Act and the Trust Indenture Act in connection with the Exchange
     Offer Materials, the Exchange Offer and the transactions contemplated
     hereby and thereby, as applicable.  If at any time when the Prospectus is
     required by the Securities Act or Exchange Act to be delivered in
     connection with the Exchange Offer, any event shall occur or condition
     shall exist as a result of which it is necessary, in the opinion of counsel
     for the Dealer Managers or counsel for the Company or the Trust, to amend
     the Registration Statement or amend or supplement the Prospectus or any
     other Exchange Offer Materials in order that the Prospectus or such other
     Exchange Offer Materials will not include an untrue statement of a material
     fact or omit to state a material fact necessary in order to make the
     statements in the Prospectus or such other Exchange Offer Materials, in the
     light of the circumstances under which they were made, not misleading or
     if, in the opinion of either such counsel, it shall be necessary to amend
     the Registration Statement or amend or supplement the Prospectus or any
     other Exchange Offer Materials to comply with the requirements of the
     Securities Act or Exchange Act, the Company and the Trust will promptly
     prepare, file with the Commission, subject to Section 4(b) hereof, and
     furnish, at its own expense to the Dealer Managers and to the dealers
     (whose names and addresses will be furnished to the Company and the Trust
     by the Dealer Managers) to which 6.50% Convertible Preferred Stock may have
     been exchanged, such amendment or supplement as may be necessary to correct
     such untrue statement or omission or to make the Registration Statement or
     the Prospectus or such other Exchange Offer Materials comply with such
     requirements;

          (c)  to endeavor, in cooperation with the Dealer Managers, to qualify 
     the Trust Convertible Preferred Securities for offering and sale in
     connection with the Exchange Offer under the applicable securities or Blue
     Sky laws of such jurisdictions as the Dealer Managers may reasonably
     request and to maintain such qualifications in effect for such time as may
     be required for the consummation of the Exchange Offer. In each
     jurisdiction in which the Trust Convertible Preferred Securities have been
     so qualified, the Trust will file such statements and reports as may be
     required by the laws of such jurisdiction to continue such qualification in
     effect for a period of not less than one year from the effective date of
     the Registration Statement;

          (d)  to make generally available to its security holders and to the
     Dealer Managers as soon as practicable an earnings statement covering a
     twelve-month period beginning not later than the first day of the Trust's
     fiscal quarter next following the effective date of the Registration
     Statement that satisfies the provisions of Section 11(a) of the Securities
     Act and the rules and regulations of the Commission thereunder; and

          (e)  to use its best efforts to advise or cause the Exchange Agent to
     advise the Dealer Managers at 5:00 P.M., New York City time, or promptly
     thereafter, daily (or

 
                                                                              21


     more frequently if requested), by telephone or facsimile transmission, with
     respect to 6.50% Convertible Preferred Stock tendered as follows: (i) the
     aggregate number of 6.50% Convertible Preferred Stock validly tendered and
     represented by certificates physically held by the Exchange Agent or
     confirmations of receipt of book-entry transfer of 6.50% Convertible
     Preferred Stock pursuant to the procedures set forth in the Exchange Offer
     on such day; (ii) the aggregate number of 6.50% Convertible Preferred Stock
     represented by Notices of Guaranteed Delivery on such day; (iii) any 6.50%
     Convertible Preferred Stock properly withdrawn on such day; and (v) the
     cumulative totals of the number of 6.50% Convertible Preferred Stock in
     categories (i) through (iii), inclusive, above.

          11.  Indemnification and Contribution; Settlement of Litigation;
               -----------------------------------------------------------
Release.  (a)   Each of the Company and the Trust jointly and severally agrees
- -------                                                                       
to indemnify and hold harmless each of the Dealer Managers, the respective
partners, the directors and officers of each of the Dealer Managers and each
person, if any, who controls each of the Dealer Managers ("Indemnified Persons")
within the meaning of either Section 15 of the Securities Act or Section 20 of
the Exchange Act (i) from and against any and all losses, claims, damages and
liabilities (including, without limitation, any legal or other expenses
reasonably incurred by each of the Dealer Managers or any such controlling
person in connection with defending or investigating any such action or claim)
(A) caused by any untrue statement or alleged untrue statement of a material
fact contained in the Registration Statement or any amendment thereof, any
related preliminary prospectus, the Prospectus, the Schedule 13E-4 or any other
Exchange Offer Materials (as amended or supplemented if the Company or the Trust
shall have furnished any amendments or supplements thereto), or caused by any
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading
(except insofar as such losses, claims, damages or liabilities are caused by any
such untrue statement or omission or alleged untrue statement or omission based
upon and in conformity with information relating to the Dealer Managers
furnished to the Company and the Trust in writing by the Dealer Managers
expressly for use therein); or (B) which arises out of or is based upon a
withdrawal, rescission or modification of or a failure to make or consummate the
Exchange Offer; and (ii) against any other loss, claim, damage or liability
which is related to, otherwise arises out of or is based upon or asserted
against such Dealer Manager in connection with its acting as Dealer Manager in
connection with the Exchange Offer, rendering financial advisory services to the
Company or the Trust in connection with the Exchange Offer or which arises in
connection with any other matter referred to in this Agreement, except to the
extent any such losses, damages, liabilities or claims referred to in this
clause (ii) are finally judicially determined to have resulted from such Dealer
Manager's gross negligence or bad faith in performing the services that are the
subject of this Agreement. The Company or the Trust also agree that neither of
the Dealer Managers nor any of such Dealer Manager's affiliates, nor any of the
partners, officers, directors, agents, employees or controlling persons (if
any), as the case may be, of such Dealer Manager or any such affiliates, shall
have any liability to the Company or the Trust or any person asserting claims on
behalf of or in right of the Company or the Trust for or in connection with any
matter referred to in this Agreement except to the extent that any loss, damage,
liability or claim incurred by the Company or the Trust results from such Dealer
Manager's gross negligence or bad faith in performing the services that are the
subject of this Agreement.

 
                                                                              22



     (b)  Each of the Dealer Managers agrees to indemnify and hold harmless 
each of the Company and the Trust, their respective directors, trustees and
officers who sign the Registration Statement or the Schedule 13E-4, and each
person, if any, who controls the Company or the Trust within the meaning of
either Section 15 of the Securities Act or Section 20 of the Exchange Act to the
same extent as the foregoing indemnity from the Trust and the Company to the
Dealer Managers contained in clause (i)(A) of Section 11(a) above, but only with
reference to information relating to such Dealer Manager furnished to the
Company or the Trust in writing by the Dealer Managers expressly for use in the
Registration Statement, any preliminary prospectus, the Prospectus, the Schedule
13E-4, any other Exchange Offer Material or any amendment or supplement thereto;

     (c)  Promptly after receipt by an Indemnified Person under Section 11 (a)
or (b) of notice of the commencement of any action, such Indemnified Person
shall, if a claim in respect thereof is to be made against the indemnifying
party under such Section (the "Indemnifying Party"), notify the Indemnifying
Party in writing of the commencement thereof; but the omission so to notify the
Indemnifying Party shall not relieve it from any liability which it may have to
any Indemnified Person otherwise than under such Section.  In case any such
action shall be brought against any Indemnified Person and it shall notify the
Indemnifying Party of the commencement thereof, the Indemnifying Party shall be
entitled to participate therein and, to the extent that it shall wish, jointly
with any other Indemnifying Party similarly notified, to assume the defense
thereof, with counsel satisfactory to such Indemnified Person (who shall not,
except with the consent of the Indemnified Person, be counsel to the
Indemnifying Party), and, after notice from the Indemnifying Party to such
Indemnified Person of its election so to assume the defense thereof, the
Indemnifying Party shall not be liable to such Indemnified Person under such
Section for any legal expenses or other counsel of any other expenses, in each
case subsequently incurred by such Indemnified Person, in connection with the
defense thereof other than reasonable costs of investigation.  No Indemnifying
Party shall, without the written consent of the Indemnified Persons, effect the
settlement or compromise of, or consent to the entry of any judgment with
respect to, any pending or threatened action or claim in respect of which
indemnification or contribution may be sought hereunder (whether or not the
Indemnified Persons are actual or potential parties to such action or claim)
unless such settlement, compromise or judgment (i) includes an unconditional
release of the Indemnified Persons from all liability arising out of such action
or claim and (ii) does not include a statement as to or an admission of fault,
culpability or a failure to act, by or on behalf of any Indemnified Person;

     (d)  If the indemnification provided for above is unavailable to an
Indemnified Party or insufficient in respect of any losses, claims, damages or
liabilities referred to therein, then each Indemnifying Party under such
paragraph, in lieu of indemnifying such Indemnified Party thereunder, shall
contribute to the amount paid or payable by such Indemnified Party as a result
of such losses, claims, damages or liabilities (A) in such proportion as is
appropriate to reflect the relative benefits received by the Company and the
Trust, on the one hand, and the Dealer Managers, on the other hand, from the
Exchange Offer or (B) if the allocation provided by clause (A) above is not
permitted by applicable law, in such proportion as is appropriate to reflect not
only the relative benefits referred to in clause (A) above but also the relative
fault of the Company and the Trust, on the one hand, and of the Dealer Managers,
on

 
                                                                              23

the other hand, in connection with the statements or omissions or any other
matter that resulted in such losses, claims, damages or liabilities, as well as
any other relevant equitable considerations. The relative benefits received by
the Company and the Trust, on the one hand, and the Dealer Managers, on the
other hand, in connection with the Exchange Offer shall be deemed to be in the
same respective proportions as the maximum aggregate liquidation amount of the
Trust Convertible Preferred Securities issuable pursuant to the Exchange Offer
bears to the total Dealer Managers' fee under this Agreement attributable
to the Exchange Offer payable to the Dealer Managers pursuant to this 
Agreement. The relative fault of the Company and the Trust, on the one hand, and
the Dealer Managers, on the other hand, (A) in the case of any untrue statement
of a material fact or omission or alleged omission to state a material fact,
shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information supplied by the Company or the
Trust, on the one hand, or by the Dealer Managers, on the other hand, and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission and (B) in the case of any other
action or omission, shall be determined by reference to, among other things,
whether such action or omission was taken or omitted to be taken by or at the
direction of or in reliance upon, the Company or the Trust or their affiliates
or by the Dealer Managers, and the parties' relative intent, knowledge, access
to information and opportunity to correct or prevent such action or omission;

     (e)  The Company, the Trust and the Dealer Managers agree that it would not
be just and equitable if contribution pursuant to Section 11(d) above were
determined by pro rata allocation or by any other method of allocation that does
not take account of the equitable considerations referred to in Section 11(d)
above. The amount paid or payable by an Indemnified Party as a result of the
losses, claims, damages and liabilities referred to in Section 11(d) above shall
be deemed to include, subject to the limitations set forth above, any legal or
other expenses reasonably incurred by such Indemnified Party in connection with
investigating or defending any such action or claim. Notwithstanding the
provisions of this Agreement, no Dealer Manager shall be required to contribute
any amount in excess of the fee paid to such Dealer Manager in connection with
the Exchange Offer as provided in this Agreement. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation;

     (f)  The remedies provided for in this Agreement are not exclusive and
shall not limit any rights or remedies which may otherwise be available to any
Indemnified Party at law or in equity; and

     (g) the indemnity and contribution provisions contained in this Agreement
and the representations and warranties of the Company and the Trust contained in
this Agreement shall remain operative and in full force and effect regardless of
(A) any termination of this Agreement, (B) any investigation made by or on
behalf of the Dealer Managers or their respective officers, directors, partners
or any person controlling any Dealer Manager, or by or on behalf of the Company
or the Trust, any of their respective officers, directors, trustees

 
                                                                              24

or any person controlling the Company or any Trust or (C) consummation of the
Exchange Offer.

          12.  Termination.  (a)  This Agreement shall terminate upon the
               -----------                                               
earliest to occur of (i) thirty days after the Expiration Date, (ii) any of the
conditions specified in Section 9 has not been fulfilled as of any date such
condition is required to be fulfilled pursuant to Section 9 (and the Dealer
Managers shall have notified the Company and the Trust thereof) or (iii) the
date on which the Company and the Trust terminate or withdraw the Exchange Offer
for any reason.

     (b)  Notwithstanding termination of this Agreement pursuant to subsection
(a) above, the obligations of the parties pursuant to Sections 6, 7 and 11 shall
survive any termination of this Agreement.

          13.  Severability.  If any term or other provision of this Agreement
               ------------                                                   
is invalid, illegal or incapable of being enforced by any rule of law, or public
policy, all other provisions of this Agreement shall nevertheless remain in full
force and effect so long as the economic and legal substance of the agreements
contained herein is not affected in any manner adverse to any party.

          14.  Counterparts.  This Agreement may be executed by the different
               ------------                                                  
parties hereto in one or more separate counterparts, each of which when executed
shall be deemed an original, but all of which together shall constitute one and
the same agreement.

          15.  Binding Effect.  This Agreement shall be binding upon and inure
               --------------                                                 
solely to the benefit of each party hereto and the Indemnified Persons, and
nothing in this Agreement, express or implied, is intended to or shall confer
upon any other person any right, benefit or remedy.

          16.  Governing Law.  This Agreement shall be governed by and construed
               -------------                                                    
in accordance with the laws of the State of New York.


          17.  Consent to Jurisdiction.  (a)  Each of the Company and the Trust
               -----------------------                                         
(I) agrees that any legal suit, action or proceeding brought by the Dealer
Managers arising out of or relating to this Agreement, the Indenture, the Trust
Convertible Preferred Securities, the Exchange Offer Materials or the
transactions contemplated hereby or thereby may be instituted in any federal or
state court in New York City, (ii) irrevocably waives, to the fullest extent it
may effectively do so, any objection (x) which it may now or hereafter have to
the laying of the venue of any such suit, action or proceeding in any federal or
state court in New York City or (y) that any such suit, action or proceeding has
been brought in an inconvenient forum, and (iii) irrevocably submits to the non-
exclusive jurisdiction of any such court in any such suit, action or proceeding.

                                                                            25

     (b) Each of the Company and the Trust irrevocably designates and appoints
Dan D. Sandman, Esq., as its authorized agent upon which process may be served
in any legal suit, action or proceeding arising out of or relating to this
Agreement or the transactions contemplated hereby which may be instituted in any
federal or state court in New York City, and agrees that service of process upon
such agent, and written notice of said service to the Company or the Trust, as
the case may be, by the person serving the same, shall be deemed in every
respect effective service of process upon the Company or the Trust, as the case
may be, in any such suit or proceeding. Each of the Company and the Trust
further agrees to take any and all actions as may be necessary to maintain such
designation and appointment of such agent in full force and effect.

     (c)  Each of the Company and the Trust agree that a final judgment in any
such legal suit, action or proceeding arising out of or relating to this
Agreement or the transactions contemplated hereby shall be conclusive and may be
enforced in other jurisdictions by suit on the judgment or in any other manner
provided by law.

          18.  Entire Agreement.  This Agreement constitutes the entire
               ----------------                                        
agreement among the parties hereto with respect to the subject matter hereof and
supersedes all prior agreements and undertakings, both written and oral, among
the parties, or any of them, with respect to the subject matter hereof.

          19.  Amendment.  This Agreement may not be amended except in a writing
               ---------                                                        
signed by each party to be bound thereby.

          20.  Notices.  All notices and other communications required or
               -------                                                   
permitted to be given under this Agreement shall be in writing and shall be
deemed to have been duly given if delivered in person, by cable, fax, telegram
or telex or by registered or certified mail (postage prepaid, return receipt
requested) to the parties hereto as follows (or, as to each party, at such other
address as shall be designated by such party in a written notice complying as to
delivery with the terms of this paragraph):

          (a)  If to you:

                  Goldman, Sachs & Co.
                  85 Broad Street
                  New York, NY 10004
                  Fax No.: (212) 357-5505
                  Attention: Registration Department

                  and

                  Merrill Lynch & Co.
                  Merrill Lynch, Pierce, Fenner & Smith Incorporated
                  World Financial Center
                  North Tower - Fifth Floor
                  250 Vesey Street
                  New York, New York 10281
                  Fax No.: (212) 449-8668
                  Attention: Registration Department

 
                                                                              26

                  With a copy to:

                  Simpson Thacher & Bartlett
                  425 Lexington Avenue
                  New York, New York 10017
                  Fax No.: (212) 455-2502
                  Attention: Raymond Wagner, Esq.


          (b)  If to the Company or the Trust,

                  USX Corporation
                  600 Grant Street
                  Pittsburgh, PA 15219
                  Fax No.: (412) 433-2015
                  Attention: General Counsel


          21.  Subheadings.  The descriptive headings contained in this
               -----------                                             
Agreement are included for convenience of reference only and shall not
affect in any way the meaning or interpretation of this Agreement.


          Please indicate your willingness to act as Dealer Managers on the
terms set forth herein and your acceptance of the foregoing provisions by
signing in the space provided below for that purpose and returning to us a
copy of this letter, whereupon this letter and your acceptance shall
constitute a binding agreement among us.

                                       Very truly yours,


                                       USX CORPORATION


                                       By____________________________________
                                            Name:
                                            Title:


                                       USX CAPITAL TRUST I


                                       By____________________________________
                                            Name:
                                            Title:

 
                                                                              27

Accepted and agreed as of the date
first above written:



___________________________________
       Goldman, Sachs & Co.



By_________________________________
   Merrill Lynch & Co.
   Merrill Lynch, Pierce, Fenner &
               Incorporated