September 1, 1999



                                September 1, 1999
Dear :

         USX Corporation (the "Corporation") recognizes that your contribution
to the growth and success of the Corporation will continue to be substantial and
desires to assure the Corporation of your continued employment.  In this
connection, the Board of Directors of the Corporation (the "Board') recognizes
that, as is the case with many publicly-held corporations, the possibility of a
change in control may exist and that such possibility, and the uncertainty and
questions which it may raise among management, may result in the departure or
distraction of management personnel to the detriment of the Corporation and its
stockholders.
         Accordingly, the Board has determined that appropriate steps should be
taken to reinforce and encourage the continued attention and dedication of
members of the Corporation's management, including yourself, to their assigned
duties without distraction in the face of potentially disturbing circumstances
arising from the possibility of a change in control of the Corporation.
         In order to induce you to remain in the employ of the Corporation, the
Corporation agrees that you shall receive the severance benefits set forth in
this letter agreement ("Agreement") in the event your employment with the
Corporation is terminated subsequent to a "Change in Control of the
Corporation" (as defined in Section 2 hereof) under the circumstances described
below.

         1.    Term of Agreement.  This Agreement will commence on the date
hereof and shall continue in effect until December 31, 2000; provided, however,
that commencing on January 1, 2001 and each January 1 thereafter, the term of
this Agreement shall automatically be extended for one additional year unless,
not later than September 1 of the preceding year, the Corporation shall have
given notice that it does not wish to extend this Agreement; provided, further,
if a Change in Control of the Corporation shall have occurred during the
original or extended term of this Agreement, this Agreement shall continue in
effect for a period of twenty-four (24) months beyond the month in which such
Change in Control of the Corporation occurred.

          2.  Change in Control of the Corporation.

          (a)  No benefits shall be payable hereunder unless there shall have
been a Change in Control of the Corporation, as set forth below.  For purposes
of this Agreement, a "Change in Control of the Corporation" and "Change in
Control" shall mean a change in control of a nature that would be required to be
reported in response to Item 6(e) of Schedule 14A of Regulation 14A promulgated
under the Securities Exchange Act of 1934, as amended (the "Exchange Act"),
whether or not the Corporation is then subject to such reporting requirement;
provided, that, without limitation, such a change in control shall be deemed to
have occurred if

              (i)  any person (as defined in Sections 13(d) and 14(d) of the
     Exchange Act) (a "Person") is or becomes the "beneficial owner" (as defined
     in Rule 13d-3 under the Exchange Act), directly or indirectly, of
     securities of the Corporation representing twenty percent (20%) or more of
     the combined voting power of the Corporation's then outstanding voting
     securities; provided, however, that for purposes of this Agreement the term
     "Person" shall not include (A) the Corporation or any of its subsidiaries,
     (B) a trustee or other fiduciary holding securities under an employee
     benefit plan of the Corporation or any of its subsidiaries, (C) an
     underwriter temporarily holding securities pursuant to an offering of such
     securities, or (D) a corporation owned, directly or indirectly, by the
     stockholders of the Corporation in substantially the same proportions as
     their ownership of stock of the Corporation; or

              (ii) the following individuals cease for any reason to constitute

     a majority of the number of directors then serving:  individuals who, on

     the date hereof, constitute the Board and any new director (other than a

     director whose initial assumption of office is in connection with an actual

     or threatened election contest including but not limited to a consent

     solicitation, relating to the election of directors of the Corporation)

     whose appointment or election by the Board or nomination for election by

     the Corporation's stockholders was approved by a vote of at least two-

     thirds (2/3) of the directors then still in office who either were

     directors on the date hereof or whose appointment, election or nomination

     for election was previously so approved; or

              (iii)there is consummated  a merger or consolidation of the

     Corporation or a subsidiary thereof with any other corporation, other than

     a merger or consolidation which would result in the holders of the voting

     securities of the Corporation outstanding immediately prior thereto holding

     securities which represent immediately after such merger or consolidation

     at least 50% of the combined voting power of the voting securities of the

     entity surviving the merger or consolidation (or the parent of such

     surviving entity), or the shareholders of the Corporation approve a plan of

     complete liquidation of the Corporation, or there is consummated the sale

     or other disposition of all or substantially all of the Corporation's

     assets.

          (b)  You agree that, subject to the terms and conditions of this

Agreement, in the event of a Change in Control of the Corporation, you will

remain in the employ of the Corporation for a period of three (3) months from

the occurrence of such Change in Control of the Corporation; provided, however,

that if during such three-month period (i) your employment is involuntarily

terminated by the Corporation other than for Cause, or (ii) you terminate your

employment during such three-month period for Good Reason, you shall not be

required to remain in the Corporation's employ.  The foregoing shall in no event

limit or otherwise affect your rights under any other provision of this

Agreement,

          (c)  For purposes of this Agreement, a "potential Change in Control of

the Corporation" shall be deemed to have occurred if

              (i)  the Corporation enters into an agreement, the consummation

     of which would result in the occurrence of a Change in Control of the

     Corporation;

              (ii) any person (including the Corporation) publicly announces an

     intention to take or to consider taking actions which if consummated would

     constitute a Change in Control of the Corporation;

              (iii)any Person, who is or becomes the beneficial owner, directly

     or indirectly, of securities of the Corporation representing 9.5% or more

     of the combined voting power of the Corporation's then outstanding

     securities, increases his beneficial ownership of such securities by 5% or

     more over the percentage so owned by such Person on the date hereof; or

              (iv) the Board adopts a resolution to the effect that, for

     purposes of this Agreement, a potential Change in Control of the

     Corporation has occurred.

You agree that, subject to the terms and conditions of this Agreement, in the

event of a potential Change in Control of the Corporation, you will remain in

the employ of the Corporation until the earliest of (i) a date which is six (6)

months from the occurrence of such potential Change in Control of the

Corporation, (ii) the termination by you of your employment by reason of your

death or Disability, as defined in Subsection 3(a), or (iii) a date which is

three (3) months from the occurrence of a Change in Control of the Corporation.

         3.    Termination Following a Change in Control of the Corporation.  If

any of the events described in section 2(a) hereof constituting a Change in

Control of the Corporation shall have occurred, you shall be entitled to the

benefits provided in Section 4(d) hereof upon the termination of your employment

during the term of this Agreement unless such termination is (i) because of your

death or Disability, (ii) by the Corporation for Cause, (iii) by you other than

for Good Reason or (iv) on or after the date that you attain age sixty-five

(65).  Notwithstanding the foregoing, if the Corporation shall have terminated

your employment at any time during the term of this Agreement for Cause, then

you shall be entitled only to the normal base salary and other employee benefits

provided in Section 4(b).  In the event your employment with the Corporation is

terminated for any reason prior to the occurrence of a Change in Control, you

shall not be entitled to any benefits hereunder; provided, however, that if your

employment is terminated prior to a Change in Control without Cause at the

direction of a person who has entered into an agreement with the Corporation,

the consummation of which will constitute a Change in Control, your employment

shall be deemed to have terminated following a Change in Control.  Your

entitlement to benefits under any of the Corporation's retirement plans will not

adversely affect your rights to receive payments hereunder.

               (a)  Disability.  If, as a result of your incapacity due to

physical or mental illness which in the opinion of a licensed physician renders

you incapable of performing your assigned duties with the Corporation, you shall

have been absent from the full-time performance of your duties with the

Corporation for six (6) consecutive months, and within thirty (30) days after

written notice of termination is given you shall not have returned to the full-

time performance of your duties, the Corporation may terminate your employment

for "Disability."

               (b)  Cause.  Termination by the Corporation of your employment

for "Cause" shall mean termination upon (i) the willful and continued failure by

you to substantially perform your duties with the Corporation (other than any

such failure resulting from termination by you for Good Reason), after a demand

for substantial performance is delivered to you that specifically identifies the

manner in which the Corporation believes that you have not substantially

performed your duties, and you have failed to resume substantial performance of

your duties on a continuous basis within fourteen (14) days of receiving such

demand, (ii) the willful engaging by you in conduct which is demonstrably and

materially injurious to the Corporation, monetarily or otherwise or (iii) your

conviction of a felony or conviction of a misdemeanor which impairs your ability

substantially to perform your duties with the Corporation.  For purposes of this

Subsection, no act, or failure to act, on your part shall be deemed "willful"

unless done, or omitted to be done, by you not in good faith and without

reasonable belief that your action or omission was in the best interest of the

Corporation.

               (c)  Good Reason.  You shall be entitled to terminate your

employment for Good Reason.  For purposes of this Agreement, "Good Reason" shall

mean, without your express written consent, the occurrence after a Change in

Control of the Corporation of any one or more of the following:

                (i) the assignment to you of duties inconsistent with your

position immediately prior to the Change in Control or a reduction or alteration

in the nature of your position, duties, status or responsibilities from those in

effect  immediately prior to the Change in Control;

                (ii)     a reduction by the Corporation in your base salary as

in effect on the date hereof (without regard to any temporary reduction effected

by the Corporation prior to a Change in Control) or as the same shall be

increased from time to time ("Base Salary") except for across-the-board

temporary salary reductions similarly affecting all senior executives of the

Corporation and all senior executives of any person in control of the

Corporation;

                (iii)    the Corporation's requiring you to be based at a

location in excess of seventy-five (75) miles from the location where you are

based immediately prior to the Change in Control;

                (iv)     the failure by the Corporation to continue in effect

any of the Corporation's employee benefit plans, programs, policies, practices

or arrangements in which you participate (or substantially equivalent successor

or replacement employee benefit plans, programs, policies, practices or

arrangements) or the failure by the Corporation to continue your participation

therein on substantially the same basis, both in terms of the amount of benefits

provided and the level of your participation relative to other participants, as

existed immediately prior to the Change in Control;

                 (v)     the failure of the Corporation to obtain a satisfactory

agreement from any successor to the Corporation to assume and agree to perform

this Agreement, as contemplated in Section 5 hereof; and

                 (vi)    any purported termination by the Corporation of your

employment that is not effected pursuant to a Notice of Termination satisfying

the requirements of subparagraph (d) below, and for purposes of this Agreement,

no such purported termination shall be effective.  Your right to terminate your

employment pursuant to this Subsection shall not be affected by your incapacity

due to physical or mental illness.  Your continued employment shall not

constitute consent to, or a waiver of rights with respect to, any circumstance

constituting Good Reason hereunder.

               (d)  Notice of Termination.  Any termination by the Corporation

for Cause or by you for Good Reason shall be communicated by Notice of

Termination to the other party hereto.  For purposes of this Agreement, a

"Notice of Termination" shall mean a written notice which shall indicate the

specific termination provision in this Agreement relied upon and shall set forth

in reasonable detail the facts and circumstances claimed to provide a basis for

termination of your employment under the provision so indicated.

               (e)  Date of Termination.  "Date of Termination" shall mean the

date specified in the Notice of Termination where required or in any other case

upon ceasing to perform services to the Corporation; provided that if within

thirty (30) days after any Notice of Termination one party notifies the other

party that a dispute exists concerning the termination, the Date of Termination

shall be the date finally determined to be the Date of Termination, either by

mutual written agreement of the parties or by a binding and final arbitration

award.

         4.    Compensation Upon Termination or During Disability.  Following a

Change in Control of the Corporation, as defined in Section 2 hereof, upon

termination of your employment or during a period of disability you shall be

entitled to the following benefits:

               (a)  During any period that you fail to perform your full-time

duties with the Corporation as a result of incapacity due to physical or mental

illness, you shall continue to receive your Base Salary at the rate in effect at

the commencement of any such period, until your employment is terminated

pursuant to Section 3(a) hereof.  Thereafter, your benefits shall be determined

in accordance with the Corporation's retirement, insurance and other applicable

programs and plans then in effect.

               (b)  If your employment shall be terminated by the Corporation

for Cause or by you other than for Good Reason, the Corporation shall pay you

your full Base Salary through the Date of Termination at the rate in effect at

the time Notice of Termination is given or on the Date of Termination if no

Notice of Termination is required hereunder, plus all other amounts to which you

are entitled under any compensation plan of the Corporation at the time such

payments are due, and the Corporation shall have no further obligations to you

under this Agreement.

               (c)  If your employment terminates by reason of your death, your

benefits shall be determined in accordance with the Corporation's retirement,

survivor's benefits, insurance and other applicable programs and plans, then in

effect.

               (d)  If your employment by the Corporation shall be terminated

(i) by the Corporation other than for Cause or Disability or (ii) by you for

Good Reason, you shall be entitled to the benefits (the "Severance Payments")

provided below:

                      (A)     the Corporation shall pay you your full Base

     Salary through the Date of Termination at the rate in effect at the time

     Notice of Termination is given, or the Date of Termination where no Notice

     of Termination is required hereunder;

                      (B)the Corporation will pay as severance benefits to you,

     not later than the fifth day following the Date of Termination, a lump sum

     severance payment (the "Severance Payment") equal to the product of (1) a

     fraction, the numerator of which is equal to the lesser of (x) thirty-six

     (36) or (y) the number of full and partial months existing between the Date

     of Termination and your sixty-fifth (65th) birthday and the denominator of

     which is equal to twelve (12), and (2) the sum of (x) your annual Base

     Salary in effect immediately prior to the occurrence of the circumstances

     giving rise to such termination, and (y) the amount, if any, of the highest

     annual bonus awarded to you under any annual bonus plan of the Corporation

     in the three (3) years immediately preceding the Date of Termination;

                      (C)     in lieu of shares of the class of common stock of

     the Corporation ("Option Shares") issuable to you upon exercise of

     outstanding options ("Options"), granted to you under any option or

     incentive plan of the Corporation (which Options shall be cancelled upon

     the making of the payment referred to below), you shall receive an amount

     in cash equal to the product of (i) the higher of the closing price of

     Option Shares reported on the New York Stock Exchange on the Date of

     Termination or the highest per share price for Option Shares actually paid

     in connection with any Change in Control of the Corporation, less the per

     share exercise price of each Option held by you, times (ii) the number of

     Option Shares covered by each such Option;

                      (D) for a twenty-four (24) month period after such

     termination, the Corporation will arrange to provide you at the

     Corporation's expense with life, disability, accident and health insurance

     benefits substantially similar to those which you were receiving

     immediately prior to the Notice of Termination; but benefits otherwise

     receivable by you pursuant to this Subsection (D) shall be reduced to the

     extent comparable benefits are actually received by you during the twenty-

     four (24) month period following your termination, and any such benefits

     actually received by you shall be reported to the Corporation;

                      (E)     in addition to the retirement benefits to which

     you are entitled under the United States Steel Corporation Plan for Non-

     Union Employee Pension Benefits, the USX Corporation Non-Tax Qualified

     Pension Plan, and the USX Corporation Executive Management Supplemental

     Pension Program or any successor plan or similar plans (the "Pension

     Plans") and the retiree medical, life and other similar benefits to which

     you are entitled under the Corporation's welfare benefit plans or any

     successor plan or plans thereto (the "Welfare Plans"), the Corporation

     shall pay you not later than the fifth day following the Date of

     Termination, a lump sum, in cash, equal to the actuarial equivalent of the

     excess of (x) the retirement pension and the medical, life and other

     benefits that would be payable to you if (i) you were terminated under

     conditions that entitled you to the highest benefit available under the

     Pension and Welfare Plans given your age, service and salary as of the Date

     of Termination and (ii) you had been absent due to layoff for a one-year

     period ending on the Date of Termination without regard to any amendment to

     the Pension or Welfare Plans made subsequent to a Change in Control of the

     Corporation and on or prior to the Date of Termination, which amendment

     adversely affects in any manner the computation of retirement or welfare

     benefits thereunder over (y) the retirement pension that you are entitled

     to receive under the Pension Plans and the medical, life and other benefits

     that you are entitled to receive under the Welfare Plans (for purposes of

     this Subsection, "actuarial equivalent" shall be determined using the same

     methods and assumptions utilized under the United States Steel Corporation

     Plan for Non-Union Employee Pension Benefits immediately prior to the

     Change in Control of the Corporation); and

                      (F)     In addition to the benefits you are entitled to

     under the USX Corporation Savings Fund Plan and/or the Marathon Thrift Plan

     and the related supplemental savings plans ("Savings Plans"), the

     Corporation shall pay you not later than the fifth day following the Date

     of Termination, a lump sum, in cash, equal to the excess of (x) the amount

     you would have been entitled to under the Savings Plans determined as if

     you were fully vested thereunder on the Date of Termination, over (y) the

     amount you are entitled to under the Savings Plans on the Date of

     Termination.

               (e)  In the event that you become entitled to the Severance

Payments, if any of the Severance Payments or other portion of the Total

Payments (as defined below) will be subject to the tax (the "Excise Tax")

imposed by section 4999 of the Internal Revenue Code of 1986, as amended (the

"Code"), the Corporation shall pay to you at the time specified in paragraph

(f), below, an additional amount (the "Gross-Up Payment") such that the net

amount retained by you, after deduction of any Excise Tax on the Severance

Payments and such other Total Payments and any federal, state and local income

tax, FICA-Health Insurance tax, and Excise Tax upon the payment provided for by

this paragraph, shall be equal to the Severance Payments and such other Total

Payments.  For purposes of determining whether any of the payments will be

subject to the Excise Tax and the amount of such Excise Tax, (i) any other

payments or benefits received or to be received by you in connection with a

Change in Control of the Corporation or your termination of employment whether

pursuant to the terms of this Agreement or any other plan, arrangement or

agreement with the Corporation, any person whose actions result in a Change in

Control of the Corporation or any person affiliated with the Corporation or such

person (together with the Severance Payment, the "Total Payments") shall be

treated as "parachute payments" within the meaning of section 280G(b)(2) of the

Code, and all "excess parachute payments" within the meaning of section

280G(b)(1) shall be treated as subject to the Excise Tax, except to the extent

that in the opinion of tax counsel selected by the Corporation's independent

auditors and acceptable to you such other payments or benefits (in whole or in

part) do not constitute parachute payments, or such excess parachute payments

(in whole or in part) represent reasonable compensation for services actually

rendered within the meaning of section 280G(b)(4) of the Code in excess of the

base amount within the meaning of section 280G(b)(3) of the Code, or are

otherwise not subject to the Excise Tax, (ii) the amount of the Total Payments

which shall be treated as subject to the Excise Tax shall be equal to the lesser

of (A) the total amount of the Total Payments or (B) the amount of excess

parachute payments within the meaning of section 280G(b)(1) (after applying

clause (i), above), and (iii) the value of any non-cash benefits or any deferred

payment or benefit shall be determined by the Corporation's independent auditors

in accordance with the principles of sections 280G(d)(3) and (4) of the Code.

For purposes of determining the amount of the Gross-Up Payment, you shall be

deemed to pay federal income taxes at the highest marginal rate of federal

income taxation in the calendar year in which the Gross-Up Payment is to be made

and state and local income taxes at the highest marginal rate of taxation in the

state and locality of your residence on the Date of Termination, net of the

maximum reduction in federal income taxes which could be obtained from deduction

of such state and local taxes.  In the event that the Excise Tax is subsequently

determined to be less than the amount taken into account hereunder at the time

of termination of your employment, you shall repay to the Corporation at the

time that the amount of such reduction in Excise Tax is finally determined the

portion of the Gross-Up Payment attributable to such reduction (plus the portion

of the Gross-Up Payment attributable to the Excise Tax, and federal and state

and local income tax , and FICA-Health Insurance tax imposed on the portion of

the Gross-Up Payment being repaid by you if such repayment results in a

reduction in Excise Tax or FICA-Health Insurance tax, and/or a federal and state

and local income tax deduction) plus interest on the amount of such repayment at

the rate provided in section 1274(b)(2)(B) of the Code.  In the event that the

Excise Tax is determined to exceed the amount taken into account hereunder at

the time of the termination of your employment (including by reason of any

payment the existence or amount of which cannot be determined at the time of the

Gross-Up Payment), the Corporation shall make an additional gross-up payment in

respect of such excess (plus any interest payable with respect to such excess)

at the time that the amount of such excess is finally determined.

               (f)  The payments provided for in paragraphs (d) and (e) above

shall be made not later than the fifth day following the Date of Termination;

provided, however, that if the amounts of such payments cannot be finally

determined on or before such day, the Corporation shall pay to you on such day

an estimate as determined in good faith by the Corporation of the minimum amount

of such payments and shall pay the remainder of such payments (together with

interest at the rate provided in section 1274(b)(2)(B) of the Code) as soon as

the amount thereof can be determined but in no event later than the thirtieth

day after the Date of Termination.  In the event that the amount of the

estimated payments exceeds the amount subsequently determined to have been due,

such excess shall constitute a loan by the Corporation to you payable on the

fifth day after demand by the Corporation (together with interest at the rate

provided in section 1274(b)(2)(B) of the Code).

              (g)   The Corporation shall also pay to you all legal fees and

expenses incurred by you as a result of such termination of employment

(including all such fees and expenses, if any, incurred in contesting or

disputing any such termination or in seeking to obtain or enforce any right or

benefit provided by this Agreement or in connection with any tax audit or

proceeding to the extent attributable to the application of section 4999 of the

Code to any payment or benefit provided hereunder).

              (h)   You shall not be required to mitigate the amount of any

payment provided for in this Section 4 by seeking other employment or otherwise,

nor shall the amount of any payment provided for in this Section 4 be reduced by

any compensation earned by you as the result of employment by another employer

after the Date of Termination, or otherwise.

         5.    Successors; Binding Agreement.

              (a)   The Corporation will require any successor (whether direct

or indirect, by purchase, merger, consolidation or otherwise) to all or

substantially all of the business and/or assets of the Corporation or of any

division or subsidiary thereof employing you to expressly assume and agree to

perform this Agreement in the same manner and to the same extent that the

Corporation would be required to perform it if no such succession had taken

place.  Failure of the Corporation to obtain such assumption and agreement prior

to the effectiveness of any such succession shall be a breach of this Agreement

and shall entitle you to compensation from the Corporation in the same amount

and on the same terms as you would be entitled hereunder if you terminate your

employment for Good Reason, except that for purposes of implementing the

foregoing, the date on which any such succession becomes effective shall be

deemed the Date of Termination.

              (b)   This Agreement shall inure to the benefit of and be

enforceable by your personal or legal representatives, executors,

administrators, successors, heirs, distributees, devisees and legatees.  If you

should die while any amount would still be payable to you hereunder if you had

continued to live, all such amounts, unless otherwise provided herein, shall be

paid in accordance with the terms of this Agreement, to your devisee, legatee or

other designee or, if there is not such designee, to your estate.

          6.   Notice.  For the purpose of this Agreement, notices and all other

 communications provided for in the Agreement shall be in writing and shall be

 deemed to have been duly given when delivered or mailed by United States

 registered mail, return receipt requested, postage prepaid, addressed to the

 respective addresses set forth on the first page of this Agreement.

          7.   Miscellaneous.  No provision of this Agreement may be modified,

 waived or discharged unless such waiver, modification or discharge is agreed to

 in writing and signed by you and such officer as may be specifically designated

 by the Board.  The validity, interpretation, construction and performance of

 this Agreement shall be governed by the laws of the State of Delaware.

          8.   Validity.  The invalidity or unenforceability of any provision of

 this Agreement shall not affect the validity or enforceability of any other

 provision of this Agreement, which shall remain in full force and effect.

          9.   Counterparts.  This Agreement may be executed in several

 counterparts, each of which shall be deemed to be an original but all of which

 together will constitute one and the same instrument.

          10.  Claims and Arbitration.  Any dispute or controversy arising under

or in connection with this Agreement shall be settled exclusively by arbitration

in accordance with the rules of the American Arbitration Association then in

effect.  Judgment may be entered on the arbitrator's award in any court having

jurisdiction; provided, however, that you shall be entitled to seek specific

performance of your right to be paid until the Date of Termination during the

pendency of any dispute or controversy arising under or in connection with this

Agreement.

         11.   Entire Agreement.  This Agreement supersedes any other agreement

or understanding between the parties hereto with respect to the issues that are

the subject matter of this Agreement.

         12.   Effective Date.  This Agreement shall become effective as of the

date set forth above.  If this letter sets forth our agreement on the subject

matter hereof, kindly sign and return to the Corporation the enclosed copy of

this letter which will then constitute our agreement on this subject.

                                   Sincerely,

                             USX CORPORATION



                             By____________________________

                                  Dan D. Sandman
                                  General Counsel, Secretary
                                  and Senior Vice President-
                                  Human Resources & Public Affairs


Agreed to this ______ day of
September, 1999.

By_______________________