USX CORP
8-K, 1999-09-28
PETROLEUM REFINING
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                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549


                                  FORM 8-K

                               CURRENT REPORT


                     PURSUANT TO SECTION 13 OR 15(d) OF
                    THE SECURITIES EXCHANGE ACT OF 1934


                    Date of Report: September 28, 1999


                                USX Corporation
            ------------------------------------------------------
            (Exact name of registrant as specified in its charter)


        Delaware                   1-5153                 25-0996816
    ---------------              ------------          -------------------
    (State or other              (Commission            (IRS Employer
    jurisdiction of              File Number)          Identification No.)
    incorporation)

    600 Grant Street
    Pittsburgh, Pennsylvania                                15219-4776
    ----------------------------------------------------------------------
    (Address of principal executive offices)                (Zip Code)


    Registrant's telephone number including area code: (412) 433-1121


                               Not Applicable
    ----------------------------------------------------------------------
       (Former name or former address, if changed since last report)



Item 5.  Other Events.

            On September 28, 1999, the Board of Directors of USX
Corporation (the "Company") approved the extension of the benefits afforded
by the Company's existing rights plan by adopting a new stockholder rights
plan. The new plan, like the existing plan, is intended to deter coercive
or partial offers which will not provide fair value to all stockholders and
enhance the Board's ability to represent all stockholders and thereby
maximize stockholder values.

            Pursuant to the new Rights Agreement between the Company and
ChaseMellon Shareholder Services, L.L.C., as Rights Agent, (i) one USX-U.S.
Steel Group Right (a "Steel Right") will be issued for each outstanding
share of USX-U.S. Steel Group Common Stock ("Steel Stock") and (ii) one
USX-Marathon Group Right (a "Marathon Right" and, together with the Steel
Rights, the "Rights") will be issued for each share of USX-Marathon Group
Common Stock ("Marathon Stock" and, together with the Steel Stock, the
"Voting Stock") to stockholders of record at the close of business on
October 9, 1999, the day the existing rights will expire. Each of the new
Rights will entitle the registered holder to purchase from the Company one
one-hundredth of a share of Series A Junior Preferred Stock, without par
value, of the Company, at a price of $110 per one one-hundredth of a share,
subject to adjustment. The Rights generally will not become exercisable
unless and until, among other things, any person acquires 15% or more of
the voting power of the outstanding Voting Stock. Like the existing plan,
the new rights plan contains a "qualifying offer" feature that exempts
fully financed all-cash tender offers for all outstanding Voting Stock that
satisfy certain defined conditions. The new Rights are redeemable under
certain circumstances at $.01 per Right and will expire, unless earlier
redeemed or extended, on October 9, 2009.

            The description and terms of the new Rights are set forth in
the 1999 Rights Agreement, a copy of which is filed herewith and is
incorporated herein by reference.


Item 7.  Financial Statements and Exhibits.

(c) Exhibits.

Exhibit No.   Exhibit
- -----------   -------
    4         Rights Agreement, dated as of September 28, 1999, between USX
              Corporation and ChaseMellon Shareholder Services, L.L.C., as
              Rights Agent, which includes as Exhibit A thereto, a Summary
              of Rights to Purchase Preferred Stock and as Exhibit B
              thereto, the Form of Rights Certificate.




                                 SIGNATURES


            Pursuant to the requirements of the Securities Exchange Act of
1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned hereunto duly authorized.


                                      USX CORPORATION


                                      By: /s/ Kenneth L. Matheny
                                          ____________________________
                                          Name: Kenneth L. Matheny
                                          Title:Vice President & Comptroller



Date: September 28, 1999




                             INDEX TO EXHIBITS


  Exhibit No.    Exhibit                                               Page
  -----------    -------                                               ----
       4         Rights Agreement, dated as of September 28, 1999,
                 between USX Corporation and ChaseMellon Shareholder
                 Services, L.L.C., as Rights Agent, which includes
                 as Exhibit A thereto, a Summary of Rights to
                 Purchase Preferred Stock and as Exhibit B thereto,
                 the Form of Rights Certificate.







                                 USX CORPORATION

                                       and

                     CHASEMELLON SHAREHOLDER SERVICES, L.L.C.

                                  Rights Agent



                               Rights Agreement,
                        Dated as of September 28, 1999




                               TABLE OF CONTENTS

      Section 1.     Certain Definitions ................................. 2
      Section 2.     Appointment of Rights Agent ......................... 9
      Section 3.     Issue of Rights Certificates ........................ 9
      Section 4.     Form of Rights Certificates ........................ 11
      Section 5.     Countersignature and Registration .................. 12
      Section 6.     Transfer, Split Up, Combination and Exchange
                     of Rights Certificates; Mutilated, Destroyed,
                     Lost or Stolen Rights Certificates ................. 13
      Section 7.     Exercise of Rights; Purchase Price; Expiration
                     Date of Rights ..................................... 14
      Section 8.     Cancellation and Destruction of Rights
                     Certificates ....................................... 16
      Section 9.     Reservation and Availability of Capital Stock ...... 17
      Section 10.    Preferred Stock Record Date ........................ 19
      Section 11.    Adjustment of Purchase Price, Number and
                     Kind of Shares or Number of Rights ................. 19
      Section 12.    Certificate of Adjusted Purchase Price or
                     Number of Shares ................................... 31
      Section 13.    Consolidation, Merger or Sale or Transfer
                     of Assets or Earning Power ......................... 32
      Section 14.    Fractional Rights and Fractional Shares ............ 35
      Section 15.    Rights of Action ................................... 36
      Section 16.    Agreement of Rights Holders ........................ 37
      Section 17.    Rights Certificate Holder Not Deemed a
                     Stockholder ........................................ 38
      Section 18.    Concerning the Rights Agent ........................ 38
      Section 19.    Merger or Consolidation or Change of Name of Rights
                     Agent .............................................. 40
      Section 20.    Duties of Rights Agent ............................. 39
      Section 21.    Change of Rights Agent ............................. 42
      Section 22.    Issuance of New Rights Certificates ................ 43
      Section 23.    Redemption and Termination ......................... 44
      Section 24.    Notice of Certain Events ........................... 45
      Section 25.    Notices ............................................ 46
      Section 26.    Supplements and Amendments ......................... 47
      Section 27.    Successors ......................................... 47
      Section 28.    Determinations and Actions by the
                     Board of Directors, etc. ........................... 47
      Section 29.    Exchange ........................................... 48
      Section 30.    Benefits of this Agreement ......................... 50
      Section 31.    Severability ....................................... 50
      Section 32.    Governing Law ...................................... 51
      Section 33.    Counterparts ....................................... 51
      Section 34.    Descriptive Headings ............................... 51


                               RIGHTS AGREEMENT


      RIGHTS AGREEMENT, dated as of September 28, 1999 (the "Agreement"),
 between USX Corporation, a Delaware corporation (the "Company"), and
 ChaseMellon Shareholder Services, L.L.C., a New Jersey limited liability
 company  (the "Rights Agent").


                              W I T N E S S E T H

      WHEREAS, the Board of Directors of the Company (the "Board of
 Directors") heretofore authorized the Rights Agreement, originally dated as
 of October 10, 1989 and as subsequently amended (the "Original Rights
 Agreement");

      WHEREAS, on September 28, 1999, the Board of Directors determined it
 desirable and in the best interests of the Company and its stockholders for
 the Company to extend the benefits afforded by the Original Agreement and
 to implement such extension by executing this Agreement;

      WHEREAS, on September 28, 1999 (the "Rights Dividend Declaration
 Date"), the Board of Directors authorized and declared a dividend
 distribution of one USX-U.S. Steel Group Right (a "Steel Right") for each
 share of  Steel Stock (as defined herein) outstanding upon the close of
 business on October 9, 1999 (the "Record Date"), and has authorized the
 issuance of one Steel Right (as such number may hereinafter be adjusted
 pursuant to the provisions of Section 11(p) hereof) for each share of Steel
 Stock issued (whether as an original issuance or from the Company's
 treasury) between the Record Date and the Distribution Date (as hereinafter
 defined) and in certain other circumstances provided herein;

      WHEREAS, on the Rights Dividend Declaration Date, the Board of
 Directors authorized and declared a dividend distribution of one USX-
 Marathon Group Right (a "Marathon Right") for each share of Marathon Stock
 (as defined herein) outstanding upon the close of business on the Record
 Date, and has authorized the issuance of one Marathon Right (as such number
 may hereinafter be adjusted pursuant to the provisions of Section 11(p)
 hereof) for each share of Marathon Stock issued (whether as an original
 issuance or from the Company's treasury) between the Record Date and the
 Distribution Date and in certain other circumstances provided herein; and

      WHEREAS, each Marathon Right and Steel Right (together, the "Rights")
 initially represent the right to purchase one one-hundredth of a share of
 Series A Junior Preferred Stock of the Company, upon the terms and subject
 to the conditions hereinafter set forth.

      NOW, THEREFORE, in consideration of the premises and the mutual
 agreements herein set forth, the parties hereby agree as follows:

           Section 1.     Certain Definitions.  For purposes of this
 Agreement, the following terms have the meanings indicated:

                (a)  "Acquiring Person" shall mean any Person who or which,
 together with any of its Affiliates and Associates, shall be the Beneficial
 Owner of shares of Voting Stock representing 15% or more of the outstanding
 Voting Power of the Company, but shall not include (i) the Company, any
 Subsidiary of the Company, any employee benefit plan of the Company or of
 any Subsidiary of the Company, or any Person or entity organized, appointed
 or established by the Company for or pursuant to the terms of any such
 plan, (ii) any Person whose ownership of shares of Voting Stock
 representing 15% or more of the outstanding Voting Power of the Company
 results solely from the Company's calculation from time to time of the
 relative voting rights of the Marathon Stock and Steel Stock, unless and
 until such Person, after becoming aware that such Person has become the
 Beneficial Owner of fifteen percent (15%) or more of the outstanding shares
 of Voting Stock, acquires Beneficial Ownership of additional shares of
 Voting Stock representing one percent (1%) or more of the shares of Voting
 Stock then outstanding, (iii) any Person who becomes the Beneficial Owner
 of shares representing fifteen percent (15%) or more of the outstanding
 Voting Power of the Company solely as a result of a reduction in the number
 of shares of Voting Stock outstanding due to the repurchase of shares of
 Voting Stock by the Company, unless and until such Person, after becoming
 aware that such Person has become the Beneficial Owner of fifteen percent
 (15%) or more of the then outstanding shares of Voting Stock, acquires
 Beneficial Ownership of additional shares of Voting Stock representing one
 percent (1%) or more of the shares of Voting Stock then outstanding, or
 (iv) any such Person who has reported or is required to report such
 ownership (but less than twenty percent (20%)) on Schedule 13G under the
 Securities Exchange Act of 1934, as amended and in effect on the date of
 the Agreement (the "Exchange Act") (or any comparable or successor report)
 or on Schedule 13D under the Exchange Act (or any comparable or successor
 report) which Schedule 13D does not state any intention to or reserve the
 right to control or influence the management or policies of the Company or
 engage in any of the actions specified in Item 4 of such schedule (other
 than the disposition of the Voting Stock) and, within ten Business Days of
 being requested by the Company to advise it regarding the same, certifies
 to the Company that such Person acquired shares of Voting Stock in excess
 of 14.9% inadvertently or without knowledge of the terms of the Rights and
 who, together with all Affiliates and Associates, thereafter does not
 acquire additional shares of Voting Stock while remaining the Beneficial
 Owner of 15% or more of the shares of Voting Stock then outstanding;
 provided, however, that if the Person requested to so certify fails to do
 so within ten Business Days, then such Person shall become an Acquiring
 Person immediately after such ten Business Day period.

                (b)  "Act" shall have the meaning set forth in Section 9(c)
 hereof.

                (c)  "Adjustment Shares" shall have the meaning set forth in
 Section 11(a)(ii) hereof.

                (d)  "Affiliate" and "Associate" shall have the respective
 meanings ascribed to such terms in Rule 12b-2 of the General Rules and
 Regulations under the Exchange Act.

                (e)  "Agreement" shall have the meaning set forth in the
 recitals to this Agreement.

                (f)  A Person shall be deemed the "Beneficial Owner" of, and
 shall be deemed to "beneficially own," any securities

                     (i)   which such Person or any of such Person's
      Affiliates or Associates, directly or indirectly, has the right to
      acquire (whether such right is exercisable immediately or only after
      the passage of time) pursuant to any agreement, arrangement or
      understanding (whether or not in writing) or upon the exercise of
      conversion rights, exchange rights, rights, warrants or options, or
      otherwise; provided, however, that a Person shall not be deemed the
      "Beneficial Owner" of, or to "beneficially own," (A) securities
      tendered pursuant to a tender or exchange offer made by such Person or
      any of such Person's Affiliates or Associates until such tendered
      securities are accepted for purchase or exchange, (B) securities
      issuable upon exercise of Rights at any time prior to the occurrence
      of a Triggering Event, or (C) securities issuable upon exercise of
      Rights from and after the occurrence of a Triggering Event which
      Rights were acquired by such Person or any of such Person's Affiliates
      or Associates prior to the Distribution Date or pursuant to Section
      3(a) or Section 22 hereof (the "Original Rights") or pursuant to
      Section 11(i) hereof in connection with an adjustment made with
      respect to any Original Rights;

                     (ii)   which such Person or any of such Person's
      Affiliates or Associates, directly or indirectly, has the right to
      vote or dispose of or has "beneficial ownership" of (as determined
      pursuant to Rule 13d-3 of the General Rules and Regulations under the
      Exchange Act), including pursuant to any agreement, arrangement or
      understanding, whether or not in writing; provided, however, that a
      Person shall not be deemed the "Beneficial Owner" of, or to
      "beneficially own," any security under this subparagraph (ii) as a
      result of an agreement, arrangement or understanding to vote such
      security if such agreement, arrangement or understanding: (A) arises
      solely from a revocable proxy given in response to a public proxy or
      consent solicitation made pursuant to, and in accordance with, the
      applicable provisions of the General Rules and Regulations under the
      Exchange Act, (B) is not also then reportable by such Person on
      Schedule 13D under the Exchange Act (or any comparable or successor
      report) and (C) does not constitute a trust, proxy, power of attorney
      or other device with the purpose or effect of allowing two or more
      persons, acting in concert, to avoid being deemed "beneficial owners"
      of such security or otherwise avoid the status of "Acquiring Person"
      under the terms of this Agreement or as part of a plan or scheme to
      avoid the reporting requirements under Schedule 13D or Sections 13(d)
      or 13(g) of the Exchange Act; or

                     (iii)   which are beneficially owned, directly or
      indirectly, by any other Person (or any Affiliate or Associate
      thereof) with which such Person (or any of such Person's Affiliates or
      Associates) has any agreement, arrangement or understanding (whether
      or not in writing), for the purpose of acquiring, holding, voting
      (except pursuant to a revocable proxy as described in the proviso to
      subparagraph (ii) of this paragraph (f)) or disposing of any voting
      securities of the Company; provided, however, that nothing in this
      paragraph (f) shall cause a Person engaged in business as an
      underwriter of securities to be the "Beneficial Owner" of, or to
      "beneficially own," any securities acquired through such Person's
      participation in good faith in a firm commitment underwriting until
      the expiration of forty days after the date of such acquisition, and
      then only if such securities continue to be owned by such Person at
      such expiration of forty days.

                (g)  "Board of Directors" shall have the meaning set forth
 in the recitals to this Agreement.

                (h)  "Business Day" shall mean any day other than a
 Saturday, Sunday or a day on which banking institutions in the jurisdiction
 of the formation of the Rights Agent are authorized or obligated by law or
 executive order to close.

                (i)  "Close of business" on any given date shall mean
 5:00 P.M., New York City time, on such date; provided, however, that if
 such date is not a Business Day it shall mean 5:00 P.M., New York City
 time, on the next succeeding Business Day.

                (j)  "Common Stock" when used with reference to any Person,
 shall mean the capital stock of such Person with the greatest voting power,
 or the equity securities or other equity interest having power to control
 or direct the management, of such Person.

                (k)  "Common Stock Equivalents" shall have the meaning set
 forth in Section 11(a)(iii) hereof.

                (l)  "Company" shall have the meaning set forth in the
 recitals to this Agreement.

                (m)  "Current Market Price" shall have the meaning set forth
 in Section 11(d)(i) hereof.

                (n)  "Current Value" shall have the meaning set forth in
 Section 11(a)(iii) hereof.

                (o)  "Distribution Date" shall have the meaning set forth in
 Section 3(a) hereof.

                (p)  "Equivalent Preferred Stock" shall have the meaning set
 forth in Section 11(b) hereof.

                (q)  "Exchange Act" shall have the meaning set forth in
 Section l(a) hereof.

                (r)  "Exchange Ratio" shall have the meaning set forth in
 Section 29(a) hereof.

                (s)  "Expiration Date" shall have the meaning set forth in
 Section 7(a) hereof.

                (t)  "Final Expiration Date" shall have the meaning set
 forth in Section 7(a) hereof.

                (u)  "Marathon Right" shall have the meaning set forth in
 the recitals to this Agreement.

                (v)  "Marathon Rights Certificates" shall have the meaning
 set forth in Section 3(a) hereof.

                (w)  "Marathon Stock" shall mean the USX-Marathon Group
 Common Stock, par value $1.00 per share, of the Company.

                (x)  "NASDAQ" shall have the meaning set forth in Section
 11(d)(i) hereof.

                (y)  "Original Rights" shall have the meaning set forth in
 Section 1(f) hereof.

                (z)  "Original Rights Agreement" shall have the meaning set
 forth in the recitals to this Agreement.

                (aa) "Person" shall mean any individual, firm, corporation,
 partnership, limited liability company or other entity.

                (bb) "Preferred Stock" shall mean shares of Series A Junior
 Preferred Stock, without par value, of the Company, and, to the extent that
 there are not a sufficient number of shares of Series A Junior Preferred
 Stock authorized to permit the full exercise of the Rights, any other
 series of Preferred Stock, without par value, of the Company designated for
 such purpose containing terms substantially similar to the terms of the
 Series A Junior Preferred Stock.

                (cc) "Principal Party" shall have the meaning set forth in
 Section 13(b) hereof.

                (dd) "Purchase Price" shall have the meaning set forth in
 Section 4(a) hereof.

                (ee) "Qualifying Offer" shall have the meaning set forth in
 Section 11(a)(ii) hereof.

                (ff) "Record Date" shall have the meaning set forth in the
 recitals to this Agreement.

                (gg) "Redemption Price" shall have the meaning set forth in
 Section 23(a) hereof.

                (hh) "Rights" shall have the meaning set forth in the
 recitals to this Agreement.

                (ii) "Rights Agent" shall have the meaning set forth in the
 recitals to this Agreement.

                (jj) "Rights Certificates" shall have the meaning set forth
 in Section 3(a) hereof.

                (kk) "Rights Dividend Declaration Date" shall have the
 meaning set forth in the recitals to this Agreement.

                (ll) "Section 11(a)(ii) Event" shall mean any event
 described in Section 11(a)(ii) hereof.

                (mm) "Section 11(a)(ii) Trigger Date" shall have the meaning
 set forth in Section 11(a)(iii) hereof.

                (nn) "Section 13 Event" shall mean any event described in
 clause (x), (y) or (z) of Section 13(a) hereof.

                (oo) "Spread" shall have the meaning set forth in Section
 11(a)(iii) hereof.

                (pp) "Steel Right" shall have the meaning set forth in the
 recitals to this Agreement.

                (qq) "Steel Rights Certificates" shall have the meaning set
 forth in Section 3(a) hereof.

                (rr) "Steel Stock" shall mean the USX-U.S. Steel Group
 Common Stock, par value $1.00 per share, of the Company.

                (ss) "Stock Acquisition Date" shall mean the first date of
 public announcement (which, for purposes of this definition, shall include,
 without limitation, a report filed or amended pursuant to Section 13(d)
 under the Exchange Act) by the Company or an Acquiring Person that an
 Acquiring Person has become such, other than pursuant to a Qualifying
 Offer.

                (tt) "Subsidiary" shall mean, with reference to any Person,
 any corporation of which an amount of voting securities sufficient to elect
 at least a majority of the directors of such corporation is beneficially
 owned, directly or indirectly, by such Person, or otherwise controlled by
 such Person.

                (uu) "Substitution Period" shall have the meaning set forth
 in Section 11(a)(iii) hereof.

                (vv) "Summary of Rights" shall have the meaning set forth in
 Section 3(b) hereof.

                (ww) "Trading Day" shall have the meaning set forth in
 Section 11(d)(i) hereof.

                (xx) "Triggering Event" shall mean any Section 11(a)(ii)
 Event or any Section 13 Event.

                (yy) "Voting Power" shall mean the total voting power
 represented by the outstanding Marathon Stock and the outstanding Steel
 Stock.

                (zz) "Voting Stock" shall mean the Marathon Stock and the
 Steel Stock.

           Section 2.     Appointment of Rights Agent.  The Company hereby
 appoints the Rights Agent to act as agent for the Company and the holders
 of the Rights in accordance with the terms and conditions hereof, and the
 Rights Agent hereby accepts such appointment.  The Company may from time to
 time appoint such Co-Rights Agents as it may deem necessary or desirable.

           Section 3.     Issue of Rights Certificates.

                (a)  Until the earlier of (i) the close of business on the
 tenth Business Day after the Stock Acquisition Date (or, if the tenth
 Business Day after the Stock Acquisition Date occurs before the Record
 Date, the close of business on the Record Date) or (ii) the close of
 business on the tenth Business Day (or such later date as may be determined
 by the Board of Directors) after the date that a tender or exchange offer
 by any Person (other than the Company, any Subsidiary of the Company, any
 employee benefit plan of the Company or of any Subsidiary of the Company,
 or any Person or entity organized, appointed or established by the Company
 for or pursuant to the terms of any such plan) is first published or sent
 or given within the meaning of Rule 14d-2(a) of the General Rules and
 Regulations under the Exchange Act, if, upon consummation thereof, such
 Person would become an Acquiring Person, in either instance, other than
 pursuant to a Qualifying Offer (the earlier of (i) and (ii) being herein
 referred to as the "Distribution Date"), (x) the Marathon Rights and Steel
 Rights will be evidenced (subject to the provisions of paragraph (b) of
 this Section 3) by the certificates for the Marathon Stock and Steel Stock,
 respectively, registered in the names of the holders of such Voting Stock
 (which certificates for Marathon Stock and Steel Stock shall be deemed also
 to be certificates for Marathon Rights and Steel Rights, respectively) and
 not by separate certificates, and (y) the Rights will be transferable only
 in connection with the transfer of the underlying shares of Voting Stock
 (including a transfer to the Company).  As soon as practicable after the
 Distribution Date, the Company shall promptly notify the Rights Agent
 thereof and provide the Rights Agent with a shareholders list of Marathon
 Stock and Steel Stock, and the Rights Agent will send or cause to be sent
 by first-class, insured, postage prepaid mail, to each record holder of (i)
 the Marathon Stock as of the close of business on the Distribution Date, at
 the address of such holder shown on the records of the Company, one or more
 rights certificates, in substantially the form of Exhibit B-1 hereto (the
 "Marathon Rights Certificates"), evidencing one Marathon Right for each
 share of Marathon Stock so held, subject to adjustment as provided herein
 and (ii) the Steel Stock as of the close of business on the Distribution
 Date, at the address of such holder shown on the records of the Company,
 one or more rights certificates, in substantially the form of Exhibit B-2
 hereto (the "Steel Rights Certificates" and, together with the Marathon
 Rights Certificates, the "Rights Certificates"), evidencing one Steel Right
 for each share of Steel Stock so held, subject to adjustment as provided
 herein.  In the event that an adjustment in the number of Rights per share
 of Voting Stock has been made pursuant to Section 11(p) hereof, at the time
 of distribution of the Rights Certificates, the Company shall make the
 necessary and appropriate rounding adjustments (in accordance with Section
 14(a) hereof) so that Rights Certificates representing only whole numbers
 of Rights are distributed and cash is paid in lieu of any fractional
 Rights.  As of and after the Distribution Date, the Rights will be
 evidenced solely by such Rights Certificates.

                (b)  The Company will make available, as promptly as
 practicable following the Record Date, a copy of a Summary of Rights, in
 substantially the form attached hereto as Exhibit A (the "Summary of
 Rights"), to any holder of Rights who may so request from time to time
 prior to the Expiration Date.  With respect to certificates for the Voting
 Stock outstanding as of the Record Date, until the Distribution Date, the
 Rights will be evidenced by such certificates for the Voting Stock and the
 registered holders of Voting Stock shall also be the registered holders of
 the associated Rights.  Until the earlier of the Distribution Date or the
 Expiration Date, the transfer of any certificates representing shares of
 Voting Stock in respect of which Rights have been issued shall also
 constitute the transfer of the Rights associated with such shares of Voting
 Stock.

                (c)  Rights shall be issued in respect of all shares of
 Voting Stock which are issued (whether originally issued or from the
 Company's treasury) after the Record Date but prior to the earlier of the
 Distribution Date or the Expiration Date.  Certificates representing such
 shares of Voting Stock shall also be deemed to be certificates for Rights,
 and shall bear either (i) the legend set forth in the Original Rights
 Agreement or (ii) the following legend:

           This certificate also evidences and entitles the holder hereof to
      certain Rights as set forth in the Rights Agreement (the "Rights
      Agreement") between USX Corporation (the "Company") and the Rights
      Agent thereunder (the "Rights Agent"), the terms of which are hereby
      incorporated herein by reference and a copy of which is on file at the
      principal offices of the Company.  Under certain circumstances, as set
      forth in the Rights Agreement, such Rights will be evidenced by
      separate certificates and will no longer be evidenced by this
      certificate.  The Company will mail to the holder of this certificate
      a copy of the Rights Agreement, as in effect on the date of mailing,
      without charge promptly after receipt of a written request therefor.
      Under certain circumstances set forth in the Rights Agreement, Rights
      issued to, or held by, any Person who is, was or becomes an Acquiring
      Person, or any Affiliate or Associate thereof (as such terms are
      defined in the Rights Agreement), whether currently held by or on
      behalf of such Person or by any subsequent holder, may become null and
      void.

 With respect to such certificates containing the foregoing legend (or the
 legend required under the Original Rights Agreement), until the earlier of
 (i) the Distribution Date or (ii) the Expiration Date, the Rights
 associated with the Voting Stock represented by such certificates shall be
 evidenced by such certificates alone and registered holders of Voting Stock
 shall also be the registered holders of the associated Rights, and the
 transfer of any of such certificates shall also constitute the transfer of
 the Rights associated with the Voting Stock represented by such
 certificates.

           Section 4.     Form of Rights Certificates.

                (a)  The Marathon Rights Certificates and Steel Rights
 Certificates (and the forms of election to purchase and of assignment to be
 printed on the reverse thereof) shall each be substantially in the form set
 forth in Exhibit B-1 and Exhibit B-2, respectively, and may have such marks
 of identification or designation and such legends, summaries or
 endorsements printed thereon as the Company may deem appropriate and as are
 not inconsistent with the provisions of this Agreement and which do not
 adversely affect the rights, duties or responsibilities of the Rights
 Agent, or as may be required to comply with any applicable law or with any
 rule or regulation made pursuant thereto or with any rule or regulation of
 any stock exchange on which the Rights may from time to time be listed, or
 to conform to usage.  Subject to the provisions of Section 11 and Section
 22 hereof, the Rights Certificates, whenever distributed, shall be dated as
 of the Record Date and on their face shall entitle the holders thereof to
 purchase such number of one one-hundredths of a share of Preferred Stock as
 shall be set forth therein at the price set forth therein (such exercise
 price per one one-hundredth of a share, the "Purchase Price"), but the
 amount and type of securities purchasable upon the exercise of each Right
 and the Purchase Price thereof shall be subject to adjustment as provided
 herein.

                (b)  Any Rights Certificate issued pursuant to Section 3(a),
 Section 11(a)(i) or Section 22 hereof that represents Rights beneficially
 owned by (i) an Acquiring Person or any Associate or Affiliate of an
 Acquiring Person, (ii) a transferee of an Acquiring Person (or of any such
 Associate or Affiliate) who becomes a transferee after such Acquiring
 Person becomes such, or (iii) a transferee of an Acquiring Person (or of
 any such Associate or Affiliate) who becomes a transferee prior to or
 concurrently with the Acquiring Person becoming such and receives such
 Rights pursuant to either (A) a transfer (whether or not for consideration)
 from the Acquiring Person to holders of equity interests in such Acquiring
 Person or to any Person with whom such Acquiring Person has any continuing
 agreement, arrangement or understanding regarding the transferred Rights or
 (B) a transfer which the Board of Directors has determined is part of a
 plan, arrangement or understanding which has as a primary purpose or effect
 avoidance of Section 7(e) hereof, and, provided that the Company shall have
 notified the Rights Agent that this Section 4(b) applies, any Rights
 Certificate issued pursuant to Section 6 or Section 11 hereof upon
 transfer, exchange, replacement or adjustment of any other Rights
 Certificate referred to in this sentence, shall contain (to the extent
 feasible) the following legend:

           The Rights represented by this Rights Certificate are or were
      beneficially owned by a Person who was or became an Acquiring Person
      or an Affiliate or Associate thereof (as such terms are defined in the
      Rights Agreement).  Accordingly, this Rights Certificate and the
      Rights represented hereby may become null and void in the
      circumstances specified in Section 7(e) of such Agreement.

           Section 5.     Countersignature and Registration.

                (a)  The Rights Certificates shall be executed on behalf of
 the Company by its Chairman of the Board, its Vice Chairman or any Vice
 President, either manually or by facsimile signature, and shall have
 affixed thereto the Company's seal or a facsimile thereof which shall be
 attested by the Secretary or an Assistant Secretary of the Company, either
 manually or by facsimile signature.  The Rights Certificates shall be
 countersigned by the Rights Agent, either manually or by facsimile
 signature, and shall not be valid for any purpose unless so countersigned.
 In case any officer of the Company who shall have signed any of the Rights
 Certificates shall cease to be such officer of the Company before
 countersignature by the Rights Agent and issuance and delivery by the
 Company, such Rights Certificates, nevertheless, may be countersigned by
 the Rights Agent and issued and delivered by the Company with the same
 force and effect as though the person who signed such Rights Certificates
 had not ceased to be such officer of the Company; and any Rights
 Certificates may be signed on behalf of the Company by any person who, at
 the actual date of the execution of such Rights Certificate, shall be a
 proper officer of the Company to sign such Rights Certificate, although at
 the date of the execution of this Rights Agreement any such person was not
 such an officer.

                (b)  Following the Distribution Date and receipt by the
 Rights Agent of all relevant information, the Rights Agent will keep or
 cause to be kept, at its office designated pursuant to Section 25 hereof,
 books for registration and transfer of the Rights Certificates issued
 hereunder.  Such books shall show the names and addresses of the respective
 holders of the Rights Certificates, the number of Rights evidenced on its
 face by each of the Rights Certificates and the date of each of the Rights
 Certificates.

           Section 6.     Transfer, Split Up, Combination and Exchange of
 Rights Certificates; Mutilated, Destroyed, Lost or Stolen Rights
 Certificates.

                (a)  Subject to the provisions of Section 4(b), Section 7(e)
 and Section 14 hereof, at any time after the close of business on the
 Distribution Date, and at or prior to the close of business on the
 Expiration Date, any Rights Certificate or Certificates (other than Rights
 Certificates that may have been exchanged pursuant to Section 29 hereof)
 may be transferred, split up, combined or exchanged for another Rights
 Certificate or Certificates, entitling the registered holder to purchase a
 like number of one one-hundredths of a share of Preferred Stock (or,
 following a Triggering Event, Marathon Stock, Steel Stock, other
 securities, cash or other assets, as the case may be) as the Rights
 Certificate or Certificates surrendered then entitled such holder (or
 former holder in the case of a transfer) to purchase.  Any registered
 holder desiring to transfer, split up, combine or exchange any Rights
 Certificate or Certificates shall make such request in writing delivered to
 the Rights Agent, and shall surrender the Rights Certificate or
 Certificates to be transferred, split up, combined or exchanged at the
 principal office or offices of the Rights Agent designated for such
 purpose.  Neither the Rights Agent nor the Company shall be obligated to
 take any action whatsoever with respect to the transfer of any such
 surrendered Rights Certificate until the registered holder shall have
 completed and signed the certificate contained in the form of assignment on
 the reverse side of such Rights Certificate and shall have provided such
 additional evidence of the identity of the Beneficial Owner (or former
 Beneficial Owner) or Affiliates or Associates thereof as the Company or the
 Rights Agent shall reasonably request.  Thereupon the Rights Agent shall,
 subject to Section 4(b), Section 7(e), Section 14 and Section 29 hereof,
 countersign and deliver to the Person entitled thereto a Rights Certificate
 or Rights Certificates, as the case may be, as so requested.  The Company
 may require payment of a sum sufficient to cover any tax or governmental
 charge that may be imposed in connection with any transfer, split up,
 combination or exchange of Rights Certificates.

                (b)  Upon receipt by the Company and the Rights Agent of
 evidence reasonably satisfactory to them of the loss, theft, destruction or
 mutilation of a Rights Certificate, and, in case of loss, theft or
 destruction, of indemnity or security reasonably satisfactory to them, and
 reimbursement to the Company and the Rights Agent of all reasonable
 expenses incidental thereto, and upon surrender to the Rights Agent and
 cancellation of the Rights Certificate if mutilated, the Company will
 execute and deliver a new Rights Certificate of like tenor to the Rights
 Agent for countersignature and delivery to the registered owner in lieu of
 the Rights Certificate so lost, stolen, destroyed or mutilated.

           Section 7.     Exercise of Rights; Purchase Price; Expiration
 Date of Rights.

                (a)  Subject to Section 7(e) hereof, the registered holder
 of any Rights Certificate may exercise the Rights evidenced thereby (except
 as otherwise provided herein including, without limitation, the
 restrictions on exercisability set forth in Section 9(c), Section
 11(a)(iii) and Section 23(a) hereof and the exchange provisions set forth
 in Section 29 hereof) in whole or in part at any time after the
 Distribution Date upon surrender of the Rights Certificate, with the form
 of election to purchase and the certificate on the reverse side thereof
 duly executed, to the Rights Agent at the office or offices of the Rights
 Agent designated for such purpose, together with payment of the aggregate
 Purchase Price with respect to the total number of one one-hundredths of a
 share (or other securities, cash or other assets, as the case may be) as to
 which such surrendered Rights are then exercisable, at or prior to the
 earlier of (i) the close of business on October 9, 2009, or such later date
 as may be established by the Board of Directors prior to the expiration of
 the Rights (the "Final Expiration Date"), or (ii) the time at which the
 Rights are redeemed or exchanged as provided in Section 23 and Section 29
 hereof (the earlier of (i) and (ii) being herein referred to as the
 "Expiration Date").

                (b)  The Purchase Price for each one one-hundredth of a
 share of Preferred Stock pursuant to the exercise of a Right shall
 initially be $110, and shall be subject to adjustment from time to time as
 provided in Sections 11 and 13(a) hereof and shall be payable in accordance
 with paragraph (c) below.

                (c)  Upon receipt of a Rights Certificate representing
 exercisable Rights, with the form of election to purchase and the
 certificate duly executed, accompanied by payment, with respect to each
 Right so exercised, of the Purchase Price per one one-hundredth of a share
 of Preferred Stock (or other shares, securities, cash or other assets, as
 the case may be) to be purchased as set forth below and an amount equal to
 any applicable transfer tax, the Rights Agent shall, subject to Section
 20(k) hereof, thereupon promptly (i) (A) requisition from any transfer
 agent of the shares of Preferred Stock (or make available, if the Rights
 Agent is the transfer agent for such shares) certificates for the total
 number of one one-hundredths of a share of Preferred Stock to be purchased
 and the Company hereby irrevocably authorizes its transfer agent to comply
 with all such requests, or (B) if the Company shall have elected to deposit
 the total number of shares of Preferred Stock issuable upon exercise of the
 Rights hereunder with a depository agent (which may include the Company),
 requisition from the depository agent depository receipts representing such
 number of one one-hundredths of a share of Preferred Stock as are to be
 purchased (in which case certificates for the shares of Preferred Stock
 represented by such receipts shall be deposited by the transfer agent with
 the depository agent) and the Company will direct the depository agent to
 comply with such request, (ii) requisition from the Company the amount of
 cash, if any, to be paid in lieu of fractional shares in accordance with
 Section 14 hereof, (iii) after receipt of such certificates or depository
 receipts, cause the same to be delivered to or upon the order of the
 registered holder of such Rights Certificate, registered in such name or
 names as may be designated by such holder, and (iv) after receipt thereof,
 deliver such cash, if any, to or upon the order of the registered holder of
 such Rights Certificate.  The payment of the Purchase Price (as such amount
 may be reduced pursuant to Section 11(a)(iii) hereof) shall be made in cash
 or by certified bank check or bank draft payable to the order of the
 Company.  In the event that the Company is obligated to issue other
 securities (including Marathon Stock or Steel Stock) of the Company, pay
 cash and/or distribute other property pursuant to Section 11(a) hereof, the
 Company will make all arrangements necessary so that such other securities,
 cash and/or other property are available for distribution by the Rights
 Agent, if and when appropriate.  The Company reserves the right to require
 prior to the occurrence of a Triggering Event that, upon exercise of
 Rights, a number of Rights be exercised so that only whole shares of
 Preferred Stock would be issued.

                (d)  In case the registered holder of any Rights Certificate
 shall exercise less than all the Rights evidenced thereby, a new Rights
 Certificate evidencing Rights equivalent to the Rights remaining
 unexercised shall be issued by the Rights Agent and delivered to, or upon
 the order of, the registered holder of such Rights Certificate, registered
 in such name or names as may be designated by such holder, subject to the
 provisions of Section 14 hereof.

                (e)  Notwithstanding anything in this Agreement to the
 contrary, from and after the first occurrence of a Section 11(a)(ii) Event,
 any Rights beneficially owned by (i) an Acquiring Person or an Associate or
 Affiliate of an Acquiring Person, (ii) a direct or indirect transferee of
 an Acquiring Person (or of any such Associate or Affiliate) who becomes a
 transferee after the Acquiring Person becomes such, or (iii) a transferee
 of an Acquiring Person (or of any such Associate or Affiliate) who becomes
 a transferee prior to or concurrently with the Acquiring Person becoming
 such and receives such Rights pursuant to either (A) a transfer (whether or
 not for consideration) from the Acquiring Person to holders of equity
 interests in such Acquiring Person or to any Person with whom the Acquiring
 Person has any continuing agreement, arrangement or understanding regarding
 the transferred Rights or (B) a transfer which the Board of Directors has
 determined is part of a plan, arrangement or understanding which has as a
 primary purpose or effect the avoidance of this Section 7(e), shall become
 null and void without any further action and no holder of such Rights shall
 have any rights whatsoever with respect to such Rights, whether under any
 provision of this Agreement or otherwise.  The Company shall notify the
 Rights Agent when this Section 7(e) applies and shall use all reasonable
 efforts to insure that the provisions of this Section 7(e) and Section 4(b)
 hereof are complied with, but neither the Company nor the Rights Agent
 shall have any liability to any holder of Rights Certificates or other
 Person as a result of the Company's failure to make any determinations with
 respect to an Acquiring Person or its Affiliates, Associates or transferees
 hereunder.

                (f)  Notwithstanding anything in this Agreement to the
 contrary, neither the Rights Agent nor the Company shall be obligated to
 undertake any action with respect to a registered holder upon the
 occurrence of any purported exercise as set forth in this Section 7 unless
 such registered holder shall have (i) completed and signed the certificate
 contained in the form of election to purchase set forth on the reverse side
 of the Rights Certificate surrendered for such exercise, and (ii) provided
 such additional evidence of the identity of the Beneficial Owner (or former
 Beneficial Owner) or Affiliates or Associates thereof as the Company shall
 reasonably request.

           Section 8.     Cancellation and Destruction of Rights
 Certificates.  All Rights Certificates surrendered for the purpose of
 exercise, transfer, split up, combination or exchange shall, if surrendered
 to the Company or any of its agents, be delivered to the Rights Agent for
 cancellation or in cancelled form, or, if surrendered to the Rights Agent,
 shall be cancelled by it, and no Rights Certificates shall be issued in
 lieu thereof except as expressly permitted by any of the provisions of this
 Agreement.  The Company shall deliver to the Rights Agent for cancellation
 and retirement, and the Rights Agent shall so cancel and retire, any other
 Rights Certificate purchased or acquired by the Company otherwise than upon
 the exercise thereof.  The Rights Agent shall deliver all cancelled Rights
 Certificates to the Company, or shall, at the written request of the
 Company, destroy such cancelled Rights Certificates, and in such case shall
 deliver a certificate of destruction thereof to the Company.

           Section 9.     Reservation and Availability of Capital Stock.

                (a)  The Company covenants and agrees that it will cause to
 be reserved and kept available out of its authorized and unissued shares of
 Preferred Stock (and, following the occurrence of a Triggering Event, out
 of its authorized and unissued shares of Marathon Stock, Steel Stock and/or
 other securities, or out of its authorized and issued shares held in its
 treasury), the number of shares of Preferred Stock (and, following the
 occurrence of a Triggering Event, Marathon Stock, Steel Stock and/or other
 securities) that, as provided in this Agreement including Section
 11(a)(iii) hereof, will be sufficient to permit the exercise in full of all
 outstanding Rights.

                (b)  So long as the shares of Preferred Stock (and,
 following the occurrence of a Triggering Event, Marathon Stock, Steel Stock
 and/or other securities) issuable and deliverable upon the exercise of the
 Rights may be listed on any national securities exchange, the Company shall
 use its best efforts to cause, from and after such time as the Rights
 become exercisable, all shares reserved for such issuance to be listed on
 such exchange upon official notice of issuance upon such exercise.

                (c)  The Company shall use its best efforts to (i) file, as
 soon as practicable following the earliest date after the first occurrence
 of a Section 11(a)(ii) Event on which the consideration to be delivered by
 the Company upon exercise of the Rights has been determined in accordance
 with Section 11(a)(iii) hereof, a registration statement under the
 Securities Act of 1933 (the "Act"), with respect to the securities
 purchasable upon exercise of the Rights on an appropriate form, (ii) cause
 such registration statement to become effective as soon as practicable
 after such filing, and (iii) cause such registration statement to remain
 effective (with a prospectus at all times meeting the requirements of the
 Act) until the earlier of (A) the date as of which the Rights are no longer
 exercisable for such securities, and (B) the date of the expiration of the
 Rights, The Company will also take such action as may be appropriate under,
 or to ensure compliance with, the securities or "blue sky" laws of the
 various states in connection with the exercisability of the Rights.  The
 Company may temporarily suspend, for a period of time not to exceed ninety
 (90) days after the date set forth in clause (i) of the first sentence of
 this Section 9(c), the exercisability of the Rights in order to prepare and
 file such registration statement and permit it to become effective.  Upon
 any such suspension, the Company shall issue a public announcement stating
 that the exercisability of the Rights has been temporarily suspended, as
 well as a public announcement at such time as the suspension is no longer
 in effect.  In addition, if the Company shall determine that a registration
 statement is required following the Distribution Date, the Company may
 temporarily suspend the exercisability of the Rights until such time as a
 registration statement has been declared effective.  Notwithstanding any
 provision of this Agreement to the contrary, the Rights shall not be
 exercisable in any jurisdiction if the requisite qualification in such
 jurisdiction shall not have been obtained, the exercise thereof shall not
 be permitted by applicable law or a registration statement shall not have
 been declared effective.

                (d)  The Company covenants and agrees that it will take all
 such action as may be necessary to ensure that all one one-hundredths of a
 share of Preferred Stock (and, following the occurrence of a Triggering
 Event, Marathon Stock, Steel Stock and/or other securities) delivered upon
 exercise of Rights shall, at the time of delivery of the certificates for
 such shares (subject to payment of the Purchase Price), be duly and validly
 authorized and issued and fully paid and nonassessable.

                (e)  The Company further covenants and agrees that it will
 pay when due and payable any and all federal and state transfer taxes and
 charges which may be payable in respect of the issuance or delivery of the
 Rights Certificates and of any certificates for a number of one one-
 hundredths of a share of Preferred Stock (or Marathon Stock, Steel Stock
 and/or other securities, as the case may be) upon the exercise of Rights.
 The Company shall not, however, be required to pay any transfer tax which
 may be payable in respect of any transfer or delivery of Rights
 Certificates to a Person other than, or the issuance or delivery of a
 number of one one-hundredths of a share of Preferred Stock (or Marathon
 Stock, Steel Stock and/or other securities, as the case may be) in respect
 of a name other than that of, the registered holder of the Rights
 Certificates evidencing Rights surrendered for exercise or to issue or
 deliver any certificates for a number of one one-hundredths of a share of
 Preferred Stock (or Marathon Stock, Steel Stock and/or other securities, as
 the case may be) in a name other than that of the registered holder upon
 the exercise of any Rights until such tax shall have been paid (any such
 tax being payable by the holder of such Rights Certificate at the time of
 surrender) or until it has been established to the Company's satisfaction
 that no such tax is due.

           Section 10.    Preferred Stock Record Date.  Each person in whose
 name any certificate for a number of one one-hundredths of a share of
 Preferred Stock (or Marathon Stock, Steel Stock and/or other securities, as
 the case may be) is issued upon the exercise of Rights shall for all
 purposes be deemed to have become the holder of record of such fractional
 shares of Preferred Stock (or Marathon Stock, Steel Stock and/or other
 securities, as the case may be) represented thereby on, and such
 certificate shall be dated, the date upon which the Rights Certificate
 evidencing such Rights was duly surrendered and payment of the Purchase
 Price (and all applicable transfer taxes) was made; provided, however, that
 if the date of such surrender and payment is a date upon which the
 Preferred Stock (or Marathon Stock, Steel Stock and/or other securities, as
 the case may be) transfer books of the Company are closed, such Person
 shall be deemed to have become the record holder of such shares (fractional
 or otherwise) on, and such certificate shall be dated, the next succeeding
 Business Day on which the Preferred Stock (or Marathon Stock, Steel Stock
 and/or other securities, as the case may be) transfer books of the Company
 are open.  Prior to the exercise of the Rights evidenced thereby, the
 holder of a Rights Certificate shall not be entitled to any rights of a
 stockholder of the Company with respect to shares for which the Rights
 shall be exercisable, including, without limitation, the right to vote, to
 receive dividends or other distributions or to exercise any preemptive
 rights, and shall not be entitled to receive any notice of any proceedings
 of the Company, except as provided herein.

           Section 11.    Adjustment of Purchase Price, Number and Kind of
 Shares or Number of Rights.  The Purchase Price, the number and kind of
 shares covered by each Right and the number of Rights outstanding are
 subject to adjustment from time to time as provided in this Section 11.

                (a)  (i) In the event the Company shall at any time after
 the date of this Agreement (A) declare a dividend on the Preferred Stock
 payable in shares of Preferred Stock, (B) subdivide the outstanding
 Preferred Stock, (C) combine the outstanding Preferred Stock into a smaller
 number of shares, or (D) issue any shares of its capital stock in a
 reclassification of the Preferred Stock (including any such
 reclassification in connection with a consolidation or merger in which the
 Company is the continuing or surviving corporation), except as otherwise
 provided in this Section 11(a) and Section 7(e) hereof, the Purchase Price
 in effect at the time of the record date for such dividend or of the
 effective date of such subdivision, combination or reclassification, and
 the number and kind of shares of Preferred Stock or capital stock, as the
 case may be, issuable on such date, shall be proportionately adjusted so
 that the holder of any Right exercised after such time shall be entitled to
 receive, upon payment of the Purchase Price then in effect, the aggregate
 number and kind of shares of Preferred Stock or capital stock, as the case
 may be, which, if such Right had been exercised immediately prior to such
 date and at a time when the Preferred Stock transfer books of the Company
 were open, such holder would have owned upon such exercise and been
 entitled to receive by virtue of such dividend, subdivision, combination or
 reclassification.  If an event occurs which would require an adjustment
 under both this Section 11(a)(i) and Section 11(a)(ii) hereof, the
 adjustment provided for in this Section 11(a)(i) shall be in addition to,
 and shall be made prior to, any adjustment required pursuant to Section
 11(a)(ii) hereof.

                     (ii)   In the event that any Person shall at any time
      after the Rights Dividend Declaration Date become an Acquiring Person,
      unless the event causing such Person to become an Acquiring Person is
      a transaction set forth in Section 13(a) hereof, or is an acquisition
      of shares of Voting Stock pursuant to a cash tender offer for all
      outstanding shares of Voting Stock which meets all of the following
      requirements:

                          (1)  on or prior to the date such offer is
      commenced within the meaning of Rule 14d-2(a) of the General
      Rules and Regulations under the Exchange Act, such Person has,
      and has provided to the Company, firm written commitments from
      responsible financial institutions, which have been accepted by
      such Person (or one of its Affiliates), to provide, subject only
      to customary terms and conditions, funds for such offer which,
      when added to the amount of cash and cash equivalents which such
      Person then has available and has irrevocably committed in
      writing to the Company to utilize for purposes of such offer,
      will be sufficient to pay for all shares of Voting Stock
      outstanding on a fully diluted basis and all related expenses;

                          (2)  shares of Voting Stock representing a
      majority of the Voting Power as of the day immediately prior to
      the date of announcement of such offer (other than Voting Stock
      beneficially owned by such Person immediately prior to such
      offer) are tendered and purchased pursuant to such offer;

                          (3)  such offer remains open for at least 45
      Business Days; provided, that (x) if there is any increase in the
      cash price of such offer, such offer must remain open for at
      least an additional 20 Business Days after the last such
      increase, (y) such offer must remain open for at least 20
      Business Days after the date that any bona fide alternative offer
      is made which, in the opinion of one or more investment banking
      firms designated by the Company, provides for consideration per
      share of Marathon Stock and Steel Stock, respectively, in excess
      of that provided for in such offer, and (z) such offer must
      remain open for at least 20 Business Days after the date on which
      such Person reduces the per share price offered in accordance
      with clause (4)(y) of this Section 11(a)(ii) (provided, in the
      case of each of clause (x), (y) and (z) above, in no event will
      such offer have been outstanding for less than 45 Business Days);
      provided further, however, that such offer need not remain open,
      as a result of this clause (3), beyond (i) the time which any
      other offer satisfying the criteria for a Qualifying Offer is
      then required to be kept open under this clause (3), or (ii) the
      scheduled expiration date, as such date may be extended by public
      announcement prior to the then scheduled expiration date, of any
      other offer with respect to which the Board of Directors has
      agreed to redeem the Rights immediately prior to acceptance for
      payment of shares thereunder (unless such other offer is
      terminated prior to its expiration without any shares having been
      purchased thereunder); and

                          (4)  prior to or on the date that such offer
      is commenced within the meaning of Rule 14d-2(a) of the General
      Rules and Regulations under the Exchange Act, such Person makes
      an irrevocable written commitment to the Company (x) to
      consummate an all-cash transaction or transactions promptly upon
      the completion of such offer, whereby all shares of Voting Stock
      not purchased in such offer will be acquired at the same price
      per share of Marathon Stock and Steel Stock, respectively, paid
      in such offer, provided that the Board of Directors shall have
      granted any approvals required to enable such Person to
      consummate such transaction or transactions following
      consummation of such offer without obtaining the vote of any
      other stockholder, (y) that such Person will not make any
      amendment to the original offer which reduces the per share price
      offered (other than a reduction to reflect any dividend declared
      by the Company after the commencement of such offer or any
      material change in the capital structure of the Company initiated
      by the Company after the commencement of such offer, whether by
      way of recapitalization, reorganization, repurchase or
      otherwise), changes the form of consideration offered, reduces
      the number of shares being sought or which is in any other
      respect materially adverse to the holders of Voting Stock, and
      (z) that neither such Person nor any of its Affiliates or
      Associates will make any offer for any equity securities of the
      Company for a period of one year after the commencement of the
      original offer if such original offer does not result in the
      tender of the number of shares of Voting Stock required to be
      purchased pursuant to clause (2) above, unless another all cash
      tender offer for all outstanding shares of Voting Stock is
      commenced (a) at a price per share of Marathon Stock and Steel
      Stock, respectively, in excess of that provided for in such
      original offer or (b) with the approval of the Board of Directors
      (in which event, any new offer by such Person or of any of its
      Affiliates or Associates must be at a price not less than that
      provided for in such approved offer);

      (an offer meeting the requirements set forth above being referred
      to herein as a "Qualifying Offer"), then, promptly following five
      (5) days after the date of the first occurrence of such an event,
      proper provision shall be made so that each holder of a Marathon
      Right or a Steel Right (except as provided below and in Section
      7(e) hereof), as the case may be, shall thereafter have the right
      to receive, upon exercise thereof at the then current Purchase
      Price in accordance with the terms of this Agreement, in lieu of
      a number of one one-hundredths of a share of Preferred Stock,
      such number of shares of Marathon Stock or Steel Stock,
      respectively, as shall equal the result obtained by (x)
      multiplying the then current Purchase Price by the then number of
      one one-hundredths of a share of Preferred Stock for which a
      Right was exercisable immediately prior to the first occurrence
      of a Section 11(a)(ii) Event, and (y) dividing that product
      (which, following such first occurrence, shall thereafter be
      referred to as the "Purchase Price" for each Right and for all
      purposes of this Agreement) by 50% of the Current Market Price
      per share of Marathon Stock, in the case of a Marathon Right, or
      Steel Stock, in the case of a Steel Right, on the date of such
      first occurrence (such number of shares of Marathon Stock or
      Steel Stock, as the case may be, being referred to as the
      "Adjustment Shares").

                     (iii)     In the event that the number of shares of
      Marathon Stock and/or Steel Stock which are authorized by the
      Company's Restated Certificate of Incorporation but that are not
      outstanding or reserved for issuance for purposes other than upon
      exercise of the Rights are not sufficient to permit the exercise in
      full of the Rights in accordance with the foregoing subparagraph (ii)
      of this Section 11(a), the Company shall (A) determine the excess of
      (1) the value of the Adjustment Shares issuable upon the exercise of a
      Right (the "Current Value") over (2) the Purchase Price (such excess,
      the "Spread"), and (B) with respect to each Right (subject to Section
      7(e) hereof), make adequate provision to substitute for the Adjustment
      Shares, upon exercise of a Right and payment of the applicable
      Purchase Price, (1) cash, (2) a reduction in the Purchase Price, (3)
      Marathon Stock or Steel Stock, or other equity securities of the
      Company (including, without limitation, shares, or units of shares, of
      preferred stock (irrespective of the voting rights associated with any
      units or shares of preferred stock) which the Board of Directors has
      deemed to have the same value as shares of Marathon Stock or Steel
      Stock (such shares of preferred stock, "Common Stock Equivalents")),
      (4) debt securities of the Company, (5) other assets, or (6) any
      combination of the foregoing, having an aggregate value equal to the
      Current Value, where such aggregate value has been determined by the
      Board of Directors based upon the advice of a nationally recognized
      investment banking firm selected by the Board of Directors; provided,
      however, if the Company shall not have made adequate provision to
      deliver value pursuant to clause (B) above within thirty (30) days
      following the later of (x) the first occurrence of a Section 11(a)(ii)
      Event and (y) the date on which the Company's right of redemption
      pursuant to Section 23(a) expires (the later of (x) and (y) being
      referred to herein as the "Section 11(a)(ii) Trigger Date"), then the
      Company shall be obligated to deliver, upon the surrender for exercise
      of a Right and without requiring payment of the Purchase Price, shares
      of Marathon Stock or Steel Stock (to the extent available), as the
      case may be, and then, if necessary, cash, which shares and/or cash
      have an aggregate value equal to the Spread.  If the Board of
      Directors shall determine in good faith that it is likely that
      sufficient additional shares of Marathon Stock or Steel Stock could be
      authorized for issuance upon exercise in full of the Rights, the
      thirty (30) day period set forth above may be extended to the extent
      necessary, but not more than ninety (90) days after the Section
      11(a)(ii) Trigger Date, in order that the Company may seek stockholder
      approval for the authorization of such additional shares (such period,
      as it may be extended, the "Substitution Period").  To the extent that
      the Company determines that some action need be taken pursuant to the
      first and/or second sentences of this Section 11(a)(iii), the Company
      (x) shall provide, subject to Section 7(e) hereof, that such action
      shall apply uniformly to all outstanding Rights, and (y) may suspend
      the exercisability of the Rights until the expiration of the
      Substitution Period in order to seek any authorization of additional
      shares and/or to decide the appropriate form of distribution to be
      made pursuant to such first sentence and to determine the value
      thereof.  In the event of any such suspension, the Company shall issue
      a public announcement stating that the exercisability of the Rights
      has been temporarily suspended, as well as a public announcement at
      such time as the suspension is no longer in effect.  For purposes of
      this Section 11(a)(iii), the value of each Adjustment Share shall be
      the Current Market Price per share of the Marathon Stock or Steel
      Stock, as the case may be, on the Section 11(a)(ii) Trigger Date and
      the value of any Common Stock Equivalent shall be deemed to equal the
      Current Market Price per share of the Marathon Stock or Steel Stock,
      as the case may be, on such date.

                (b)  In case the Company shall fix a record date for the
 issuance of rights, options or warrants to all holders of Preferred Stock
 entitling them to subscribe for or purchase (for a period expiring within
 forty-five (45) calendar days after such record date) Preferred Stock (or
 shares having the same rights, privileges and preferences as the shares of
 Preferred Stock ("Equivalent Preferred Stock")) or securities convertible
 into Preferred Stock or Equivalent Preferred Stock at a price per share of
 Preferred Stock or per share of Equivalent Preferred Stock (or having a
 conversion price per share, if a security convertible into Preferred Stock
 or Equivalent Preferred Stock) less than the Current Market Price per share
 of Preferred Stock on such record date, the Purchase Price to be in effect
 after such record date shall be determined by multiplying the Purchase
 Price in effect immediately prior to such record date by a fraction, the
 numerator of which shall be the number of shares of Preferred Stock
 outstanding on such record date, plus the number of shares of Preferred
 Stock which the aggregate offering price of the total number of shares of
 Preferred Stock and/or Equivalent Preferred Stock so to be offered (and/or
 the aggregate initial conversion price of the convertible securities so to
 be offered) would purchase at such current market price, and the
 denominator of which shall be the number of shares of Preferred Stock
 outstanding on such record date, plus the number of additional shares of
 Preferred Stock and/or Equivalent Preferred Stock to be offered for
 subscription or purchase (or into which the convertible securities so to be
 offered are initially convertible).  In case such subscription price may be
 paid by delivery of consideration part or all of which may be in a form
 other than cash, the value of such consideration shall be as determined in
 good faith by the Board of Directors, whose determination shall be
 described in a statement filed with the Rights Agent and shall be binding
 on the Rights Agent and the holders of the Rights.  Shares of Preferred
 Stock owned by or held for the account of the Company shall not be deemed
 outstanding for the purpose of any such computation.  Such adjustment shall
 be made successively whenever such a record date is fixed, and in the event
 that such rights or warrants are not so issued, the Purchase Price shall be
 adjusted to be the Purchase Price which would then be in effect if such
 record date had not been fixed.

                (c)  In case the Company shall fix a record date for a
 distribution to all holders of Preferred Stock (including any such
 distribution made in connection with a consolidation or merger in which the
 Company is the continuing corporation) of evidences of indebtedness, cash
 (other than a regular quarterly cash dividend out of the earnings or
 retained earnings of the Company), assets (other than a dividend payable in
 Preferred Stock, but including any dividend payable in stock other than
 Preferred Stock) or subscription rights or warrants (excluding those
 referred to in Section 11(b) hereof), the Purchase Price to be in effect
 after such record date shall be determined by multiplying the Purchase
 Price in effect immediately prior to such record date by a fraction, the
 numerator of which shall be the Current Market Price per share of Preferred
 Stock on such record date, less the fair market value (as determined in
 good faith by the Board of Directors, whose determination shall be
 described in a statement filed with the Rights Agent) of the portion of the
 cash, assets or evidences of indebtedness so to be distributed or of such
 subscription rights or warrants applicable to a share of Preferred Stock
 and the denominator of which shall be such Current Market Price per share
 of Preferred Stock.  Such adjustments shall be made successively whenever
 such a record date is fixed, and in the event that such distribution is not
 so made, the Purchase Price shall be adjusted to be the Purchase Price
 which would have been in effect if such record date had not been fixed.

                (d)  (i) For the purpose of any computation hereunder, other
 than computations made pursuant to Section 11(a)(iii) hereof, the "Current
 Market Price" per share of Marathon Stock or Steel Stock on any date shall
 be deemed to be the average of the daily closing prices per share of such
 Marathon Stock or Steel Stock, respectively, for the thirty (30)
 consecutive Trading Days immediately prior to such date, and for purposes
 of computations made pursuant to Section 11(a)(iii) hereof, the Current
 Market Price per share of Marathon Stock or Steel Stock, as the case may
 be, on any date shall be deemed to be the average of the daily closing
 prices per share of such Marathon Stock or Steel Stock, respectively, for
 the ten (10) consecutive Trading Days immediately following such date;
 provided, however, that in the event that the Current Market Price per
 share of the Marathon Stock or Steel Stock is determined during a period
 following the announcement by the issuer of such Marathon Stock or Steel
 Stock, as the case may be, of (A) a dividend or distribution on such
 Marathon Stock or Steel Stock payable in shares of such Marathon Stock or
 Steel Stock or securities convertible into shares of such Marathon Stock or
 Steel Stock (other than the Rights), or (B) any subdivision, combination or
 reclassification of such Marathon Stock or Steel Stock, and the ex-dividend
 date for such dividend or distribution, or the record date for such
 subdivision, combination or reclassification shall not have occurred prior
 to the commencement of the requisite thirty (30) Trading Day period or ten
 (10) Trading Day period, as set forth above; then, and in each such case,
 the Current Market Price shall be properly adjusted to take into account
 ex-dividend trading.  The closing price for each day shall be the last sale
 price, regular way, or, in case no such sale takes place on such day, the
 average of the closing bid and asked prices, regular way, in either case as
 reported in the principal consolidated transaction reporting system with
 respect to securities listed or admitted to trading on the New York Stock
 Exchange or, if the shares of Marathon Stock or Steel Stock, as the case
 may be, are not listed or admitted to trading on the New York Stock
 Exchange, as reported in the principal consolidated transaction reporting
 system with respect to securities listed on the principal national
 securities exchange on which the shares of Marathon Stock or Steel Stock,
 as the case may be, are listed or admitted to trading or, if the shares of
 Marathon Stock or Steel Stock, as the case may be, are not listed or
 admitted to trading on any national securities exchange, the last quoted
 price or, if not so quoted, the average of the high bid and low asked
 prices in the over-the-counter market, as reported by the National
 Association of Securities Dealers, Inc.  Automated Quotation System
 ("NASDAQ") or such other system then in use, or, if on any such date the
 shares of Marathon Stock or Steel Stock, as the case may be, are not quoted
 by any such organization, the average of the closing bid and asked prices
 as furnished by a professional market maker making a market in the Marathon
 Stock or Steel Stock, as the case may be, selected by the Board of
 Directors.  If on any such date no market maker is making a market in the
 Marathon Stock or Steel Stock, as the case may be, the fair value of such
 shares on such date as determined in good faith by the Board of Directors
 shall be used.  The term "Trading Day" shall mean a day on which the
 principal national securities exchange on which the shares of Marathon
 Stock or Steel Stock, as the case may be, are listed or admitted to trading
 is open for the transaction of business or, if the shares of Marathon Stock
 or Steel Stock, as the case may be, are not listed or admitted to trading
 on any national securities exchange, a Business Day.  If the Marathon Stock
 or Steel Stock, as the case may be, are not publicly held or not so listed
 or traded, Current Market Price per share shall mean the fair value per
 share as determined in good faith by the Board of Directors, whose
 determination shall be described in a statement filed with the Rights Agent
 and shall be conclusive for all purposes.

                     (ii) For the purpose of any computation hereunder, the
      Current Market Price per share of Preferred Stock shall be determined
      in the same manner as set forth above for the Voting Stock in clause
      (i) of this Section 11(d) (other than the last sentence thereof).  If
      the Current Market Price per share of Preferred Stock cannot be
      determined in the manner provided above or if the Preferred Stock is
      not publicly held or listed or traded in a manner described in clause
      (i) of this Section 11(d), the Current Market Price per share of
      Preferred Stock shall be conclusively deemed to be an amount equal to
      100 (as such number may be appropriately adjusted for such events as
      stock splits, stock dividends and recapitalizations with respect to
      the Voting Stock occurring after the date of this Agreement)
      multiplied by an amount equal to the product of (x) the sum of (1) the
      Current Market Price per share of the Marathon Stock and (2) the
      Current Market Price per share of the Steel Stock multiplied by (y)
      0.5.  If none of the Marathon Stock, the Steel Stock, or the Preferred
      Stock are publicly held or so listed or traded, Current Market Price
      per share of the Preferred Stock shall mean the fair value per share
      as determined in good faith by the Board of Directors, whose
      determination shall be described in a statement filed with the Rights
      Agent and shall be conclusive for all purposes.  For all purposes of
      this Agreement, the Current Market Price of one one-hundredth of a
      share of Preferred Stock shall be equal to the Current Market Price of
      one share of Preferred Stock divided by 100.

                (e)  Anything herein to the contrary notwithstanding, no
 adjustment in the Purchase Price shall be required unless such adjustment
 would require an increase or decrease of at least one percent (1%) in the
 Purchase Price; provided, however, that any adjustments which by reason of
 this Section 11(e) are not required to be made shall be carried forward and
 taken into account in any subsequent adjustment.  All calculations under
 this Section 11 shall be made to the nearest cent or to the nearest ten-
 thousandth of a share of Marathon Stock or Steel Stock, or other share or
 one-millionth of a share of Preferred Stock, as the case may be.
 Notwithstanding the first sentence of this Section 11(e), any adjustment
 required by this Section 11 shall be made no later than the earlier of
 (i) three (3) years from the date of the transaction which mandates such
 adjustment, or (ii) the Expiration Date.

                (f)  If as a result of an adjustment made pursuant to
 Section 11(a)(ii) or Section 13(a) hereof, the holder of any Right
 thereafter exercised shall become entitled to receive any shares of capital
 stock other than Preferred Stock, thereafter the number of such other
 shares so receivable upon exercise of any Right and the Purchase Price
 thereof shall be subject to adjustment from time to time in a manner and on
 terms as nearly equivalent as practicable to the provisions with respect to
 the Preferred Stock contained in Sections 11(a), (b), (c), (e), (g), (h),
 (i), (j), (k) and (m), and the provisions of Sections 7, 9, 10, 13 and 14
 hereof with respect to the Preferred Stock shall apply on like terms to any
 such other shares.

                (g)  All Rights originally issued by the Company subsequent
 to any adjustment made to the Purchase Price hereunder shall evidence the
 right to purchase, at the adjusted Purchase Price, the number of one one-
 hundredths of a share of Preferred Stock purchasable from time to time
 hereunder upon exercise of the Rights, all subject to further adjustment as
 provided herein.

                (h)  Unless the Company shall have exercised its election as
 provided in Section 11(i), upon each adjustment of the Purchase Price as a
 result of the calculations made in Sections 11(b) and (c), each Right
 outstanding immediately prior to the making of such adjustment shall
 thereafter evidence the right to purchase, at the adjusted Purchase Price,
 that number of one one-hundredths of a share of Preferred Stock (calculated
 to the nearest one-millionth) obtained by (i) multiplying (x) the number of
 one one-hundredths of a share covered by a Right immediately prior to this
 adjustment, by (y) the Purchase Price in effect immediately prior to such
 adjustment of the Purchase Price, and (ii) dividing the product so obtained
 by the Purchase Price in effect immediately after such adjustment of the
 Purchase Price.

                (i)  The Company may elect on or after the date of any
 adjustment of the Purchase Price to adjust the number of Rights, in lieu of
 any adjustment in the number of one one-hundredths of a share of Preferred
 Stock purchasable upon the exercise of a Right.  Each of the Rights
 outstanding after the adjustment in the number of Rights shall be
 exercisable for the number of one one-hundredths of a share of Preferred
 Stock for which a Right was exercisable immediately prior to such
 adjustment.  Each Right held of record prior to such adjustment of the
 number of Rights shall become that number of Rights (calculated to the
 nearest one-ten-thousandth) obtained by dividing the Purchase Price in
 effect immediately prior to adjustment of the Purchase Price by the
 Purchase Price in effect immediately after adjustment of the Purchase
 Price.  The Company shall make a public announcement of its election to
 adjust the number of Rights, indicating the record date for the adjustment,
 and, if known at the time, the amount of the adjustment to be made.  This
 record date may be the date on which the Purchase Price is adjusted or any
 day thereafter, but, if the Rights Certificates have been issued, shall be
 at least ten (10) days later than the date of the public announcement.  If
 Rights Certificates have been issued, upon each adjustment of the number of
 Rights pursuant to this Section 11(i), the Company shall, as promptly as
 practicable, cause to be distributed to holders of record of Rights
 Certificates on such record date Rights Certificates evidencing, subject to
 Section 14 hereof, the additional Rights to which such holders shall be
 entitled as a result of such adjustment, or, at the option of the Company,
 shall cause to be distributed to such holders of record in substitution and
 replacement for the Rights Certificates held by such holders prior to the
 date of adjustment, and upon surrender thereof, if required by the Company,
 new Rights Certificates evidencing all the Rights to which such holders
 shall be entitled after such adjustment.  Rights Certificates so to be
 distributed shall be issued, executed and countersigned in the manner
 provided for herein (and may bear, at the option of the Company, the
 adjusted Purchase Price) and shall be registered in the names of the
 holders of record of Rights Certificates on the record date specified in
 the public announcement.

                (j)  Irrespective of any adjustment or change in the
 Purchase Price or the number of one one-hundredths of a share of Preferred
 Stock issuable upon the exercise of the Rights, the Rights Certificates
 theretofore and thereafter issued may continue to express the Purchase
 Price per one one-hundredths of a share and the number of one one-
 hundredths of a share which were expressed in the initial Rights
 Certificates issued hereunder.

                (k)  Before taking any action that would cause an adjustment
 reducing the Purchase Price below the then stated value, if any, of the
 number of one one-hundredths of a share of Preferred Stock issuable upon
 exercise of the Rights, the Company shall take any corporate action which
 may, in the opinion of its counsel, be necessary in order that the Company
 may validly and legally issue fully paid and nonassessable such number of
 one one-hundredths of a share of Preferred Stock at such adjusted Purchase
 Price.

                (l)  In any case in which this Section 11 shall require that
 an adjustment in the Purchase Price be made effective as of a record date
 for a specified event, the Company may elect to defer (with prompt notice
 thereof to the Rights Agent) until the occurrence of such event the
 issuance to the holder of any Right exercised after such record date the
 number of one one-hundredths of a share of Preferred Stock and other
 capital stock or securities of the Company, if any, issuable upon such
 exercise over and above the number of one one-hundredths of a share of
 Preferred Stock and other capital stock or securities of the Company, if
 any, issuable upon such exercise on the basis of the Purchase Price in
 effect prior to such adjustment; provided, however, that the Company shall
 deliver to such holder a due bill or other appropriate instrument
 evidencing such holder's right to receive such additional shares
 (fractional or otherwise) or securities upon the occurrence of the event
 requiring such adjustment.

                (m)  Anything in this Section 11 to the contrary
 notwithstanding, the Company shall be entitled to make such reductions in
 the Purchase Price, in addition to those adjustments expressly required by
 this Section 11, as and to the extent that in their good faith judgment the
 Board of Directors shall determine to be advisable in order that any (i)
 consolidation or subdivision of the Preferred Stock, (ii) issuance wholly
 for cash of any shares of Preferred Stock at less than the Current Market
 Price, (iii) issuance wholly for cash of shares of Preferred Stock or
 securities which by their terms are convertible into or exchangeable for
 shares of Preferred Stock, (iv) stock dividends or (v) issuance of rights,
 options or warrants referred to in this Section 11, hereafter made by the
 Company to holders of its Preferred Stock shall not be taxable to such
 stockholders.

                (n)  The Company covenants and agrees that it shall not, at
 any time after the Distribution Date, (i) consolidate with any other Person
 (other than a Subsidiary of the Company in a transaction which complies
 with Section 11(o) hereof), (ii) merge with or into any other Person (other
 than a Subsidiary of the Company in a transaction which complies with
 Section 11(o) hereof), or (iii) sell or transfer (or permit any Subsidiary
 to sell or transfer), in one transaction, or a series of related
 transactions, assets, earning power or cash flow aggregating more than 50%
 of the assets, earning power or cash flow of the Company and its
 Subsidiaries (taken as a whole) to any other Person or Persons (other than
 the Company and/or any of its Subsidiaries in one or more transactions each
 of which complies with Section 11(o) hereof), if (x) at the time of or
 immediately after such consolidation, merger or sale there are any rights,
 warrants or other instruments or securities outstanding or agreements in
 effect which would substantially diminish or otherwise eliminate the
 benefits intended to be afforded by the Rights or (y) prior to,
 simultaneously with or immediately after such consolidation, merger or
 sale, the shareholders of the Person who constitutes, or would constitute,
 the "Principal Party" for purposes of Section 13(a) hereof shall have
 received a distribution of Rights previously owned by such Person or any of
 its Affiliates and Associates.

                (o)  The Company covenants and agrees that, after the
 Distribution Date, it will not, except as permitted by Section 23 or
 Section 26 hereof, take (or permit any Subsidiary to take) any action if at
 the time such action is taken it is reasonably foreseeable that such action
 will diminish substantially or otherwise eliminate the benefits intended to
 be afforded by the Rights.

                (p)  Anything in this Agreement to the contrary
 notwithstanding, in the event that the Company shall at any time after the
 Rights Dividend Declaration Date and prior to the Distribution Date (i)
 declare a dividend on the outstanding shares of any class of Voting Stock
 payable in shares of any class of Voting Stock, (ii) subdivide the
 outstanding shares of any class of Voting Stock, or (iii) combine the
 outstanding shares of any class of Voting Stock into a smaller number of
 shares, the number of Rights associated with each share of such class of
 Voting Stock then outstanding, or issued or delivered thereafter but prior
 to the Distribution Date, shall be proportionately adjusted so that the
 number of Rights thereafter associated with each share of such class of
 Voting Stock following any such event shall equal the result obtained by
 multiplying the number of Rights associated with each share of such class
 of Voting Stock immediately prior to such event by a fraction the numerator
 of which shall be the total number of shares of such class of Voting Stock
 outstanding immediately prior to the occurrence of the event and the
 denominator of which shall be the total number of shares of such class of
 Voting Stock outstanding immediately following the occurrence of such
 event.

           Section 12.    Certificate of Adjusted Purchase Price or Number
 of Shares.  Whenever an adjustment is made as provided in Section 11 and
 Section 13 hereof, the Company shall (a) promptly prepare a certificate
 setting forth such adjustment and a brief statement of the facts accounting
 for such adjustment, (b) promptly file with the Rights Agent, and with each
 transfer agent for the Preferred Stock, the Marathon Stock and the Steel
 Stock, a copy of such certificate, and (c) mail, or cause to be mailed, a
 brief summary thereof to each holder of a Rights Certificate in accordance
 with Section 25 hereof.  The Rights Agent shall be fully protected in
 relying on any such certificate and on any adjustment therein contained.

           Section 13.    Consolidation, Merger or Sale or Transfer of
 Assets or Earning Power.

                (a)  In the event that, following the Stock Acquisition
 Date, directly or indirectly, (x) the Company shall consolidate with, or
 merge with and into, any other Person (other than a Subsidiary of the
 Company in a transaction which complies with Section 11(o) hereof), and the
 Company shall not be the continuing or surviving corporation of such
 consolidation or merger, (y) any Person (other than a Subsidiary of the
 Company in a transaction which complies with Section 11(o) hereof) shall
 consolidate with, or merge with or into, the Company, and the Company shall
 be the continuing or surviving corporation of such consolidation or merger
 and, in connection with such consolidation or merger, all or part of the
 outstanding shares of Voting Stock shall be changed into or exchanged for
 stock or other securities of any other Person or cash or any other
 property, or (z) the Company shall sell or otherwise transfer (or one or
 more of its Subsidiaries shall sell or otherwise transfer), in one
 transaction or a series of related transactions, assets, earning power or
 cash flow aggregating more than 50% of the assets, earning power or cash
 flow of the Company and its Subsidiaries (taken as a whole) to any Person
 or Persons (other than the Company or any Subsidiary of the Company in one
 or more transactions each of which complies with Section 11(o) hereof),
 then, and in each such case (except as may be contemplated by Section 13(d)
 hereof), proper provision shall be made so that: (i) each holder of a
 Right, except as provided in Section 7(e) hereof, shall thereafter have the
 right to receive, upon the exercise thereof at the then current Purchase
 Price in accordance with the terms of this Agreement, such number of
 validly authorized and issued, fully paid, non-assessable and freely
 tradeable shares of Common Stock of the Principal Party (as such term is
 hereinafter defined), not subject to any liens, encumbrances, rights of
 first refusal or other adverse claims, as shall be equal to the result
 obtained by (1) multiplying the then current Purchase Price by the number
 of one one-hundredths of a share of Preferred Stock for which a Right is
 exercisable immediately prior to the first occurrence of a Section 13 Event
 (or, if a Section 11(a)(ii) Event has occurred prior to the first
 occurrence of a Section 13 Event, multiplying the number of such one one-
 hundredths of a share for which a Right was exercisable immediately prior
 to the first occurrence of a Section 11(a)(ii) Event by the Purchase Price
 in effect immediately prior to such first occurrence), and dividing that
 product (which, following the first occurrence of a Section 13 Event, shall
 be referred to as the "Purchase Price" for each Right and for all purposes
 of this Agreement) by (2) 50% of the Current Market Price per share of the
 Common Stock of such Principal Party on the date of consummation of such
 Section 13 Event; (ii) such Principal Party shall thereafter be liable for,
 and shall assume, by virtue of such Section 13 Event, all the obligations
 and duties of the Company pursuant to this Agreement; (iii) the term
 "Company" shall thereafter be deemed to refer to such Principal Party, it
 being specifically intended that the provisions of Section 11 hereof shall
 apply only to such Principal Party following the first occurrence of a
 Section 13 Event; (iv) such Principal Party shall take such steps
 (including, but not limited to, the reservation of a sufficient number of
 shares of its Common Stock) in connection with the consummation of any such
 transaction as may be necessary to assure that the provisions hereof shall
 thereafter be applicable, as nearly as reasonably may be, in relation to
 its shares of Common Stock thereafter deliverable upon the exercise of the
 Rights; and (v) the provisions of Section 11(a)(ii) hereof shall be of no
 effect following the first occurrence of any Section 13 Event.

                (b)  "Principal Party" shall mean

                     (i)  in the case of any transaction described in clause
      (x) or (y) of the first sentence of Section 13(a), the Person that is
      the issuer of any securities into which shares of Voting Stock are
      converted in such merger or consolidation, and if no securities are so
      issued, the Person that is the other party to such merger or
      consolidation; and

                     (ii) in the case of any transaction described in clause
      (z) of the first sentence of Section 13(a), the Person that is the
      party receiving the greatest portion of the assets or earning power
      transferred pursuant to such transaction or transactions;

 provided, however, that in any such case, (1) if the Common Stock of such
 Person is not at such time and has not been continuously over the preceding
 twelve (12) month period registered under Section 12 of the Exchange Act,
 and such Person is a direct or indirect Subsidiary of another Person the
 Common Stock of which is and has been so registered, "Principal Party"
 shall refer to such other Person; and (2) in case such Person is a
 Subsidiary, directly or indirectly, of more than one Person, the Common
 Stocks of two or more of which are and have been so registered, "Principal
 Party" shall refer to whichever of such Persons is the issuer of the Common
 Stock having the greatest aggregate market value.

                (c)  The Company shall not consummate any such
 consolidation, merger, sale or transfer unless the Principal Party shall
 have a sufficient number of authorized shares of its Common Stock which
 have not been issued or reserved for issuance to permit the exercise in
 full of the Rights in accordance with this Section 13 and unless prior
 thereto the Company and such Principal Party shall have executed and
 delivered to the Rights Agent a supplemental agreement providing for the
 terms set forth in paragraphs (a) and (b) of this Section 13 and further
 providing that, as soon as practicable after the date of any consolidation,
 merger or sale of assets mentioned in paragraph (a) of this Section 13, the
 Principal Party will

                     (i)  prepare and file a registration statement under
      the Act, with respect to the Rights and the securities purchasable
      upon exercise of the Rights on an appropriate form, and will use its
      best efforts to cause such registration statement to (A) become
      effective as soon as practicable after such filing and (B) remain
      effective (with a prospectus at all times meeting the requirements of
      the Act) until the Expiration Date;

                     (ii) take all such other action as may be necessary to
      enable the Principal Party to issue the securities purchasable upon
      exercise of the Rights, including, but not limited to, the
      registration or qualification of such securities under all requisite
      securities laws of jurisdictions of the various states and the listing
      of such securities on such exchanges and trading markets as may be
      necessary or appropriate; and

                     (iii)  deliver to holders of the Rights historical
      financial statements for the Principal Party and each of its
      Affiliates which comply in all respects with the requirements for
      registration on Form 10 under the Exchange Act.

 The provisions of this Section 13 shall similarly apply to successive
 mergers or consolidations or sales or other transfers.  In the event that a
 Section 13 Event shall occur at any time after the occurrence of a Section
 11(a)(ii) Event, the Rights which have not theretofore been exercised shall
 thereafter become exercisable in the manner described in Section 13(a).

                (d)  Notwithstanding anything in this Agreement to the
 contrary, Section 13 shall not be applicable to a transaction described in
 subparagraphs (x) and (y) of Section 13(a) hereof if (i) such transaction
 is consummated with a Person or Persons who acquired shares of Voting Stock
 pursuant to a Qualifying Offer (or a wholly owned subsidiary of any such
 Person or Persons), (ii) the price per share of Marathon Stock and Steel
 Stock offered in such transaction is not less than the price per share of
 Marathon Stock and Steel Stock, respectively, paid to all holders of shares
 of Marathon Stock and Steel Stock whose shares were purchased pursuant to
 such Qualifying Offer and (iii) the form of consideration being offered to
 the remaining holders of shares of Voting Stock pursuant to such
 transaction is cash.  Upon consummation of any such transaction
 contemplated by this Section 13(d), all Rights hereunder shall expire.

           Section 14.    Fractional Rights and Fractional Shares.

                (a)  The Company shall not be required to issue fractions of
 Rights, except prior to the Distribution Date as provided in Section 11(p)
 hereof, or to distribute Rights Certificates which evidence fractional
 Rights.  In lieu of such fractional Rights, there shall be paid to the
 registered holders of the Rights Certificates with regard to which such
 fractional Rights would otherwise be issuable, an amount in cash equal to
 the same fraction of the current market value of a whole Right.  For
 purposes of this Section 14(a), the current market value of a whole Right
 shall be the closing price of the Rights for the Trading Day immediately
 prior to the date on which such fractional Rights would have been otherwise
 issuable.  The closing price of the Rights for any day shall be the last
 sale price, regular way, or, in case no such sale takes place on such day,
 the average of the closing bid and asked prices, regular way, in either
 case as reported in the principal consolidated transaction reporting system
 with respect to securities listed or admitted to trading on the New York
 Stock Exchange or, if the Rights are not listed or admitted to trading on
 the New York Stock Exchange, as reported in the principal consolidated
 transaction reporting system with respect to securities listed on the
 principal national securities exchange on which the Rights are listed or
 admitted to trading, or if the Rights are not listed or admitted to trading
 on any national securities exchange, the last quoted price or, if not so
 quoted, the average of the high bid and low asked prices in the over-the-
 counter market, as reported by NASDAQ or such other system then in use or,
 if on any such date the Rights are not quoted by any such organization, the
 average of the closing bid and asked prices as furnished by a professional
 market maker making a market in the Rights selected by the Board of
 Directors.  If on any such date no such market maker is making a market in
 the Rights the fair value of the Rights on such date as determined in good
 faith by the Board of Directors shall be used.

                (b)  The Company shall not be required to issue fractions of
 shares of Preferred Stock (other than fractions which are integral
 multiples of one one-hundredth of a share of Preferred Stock) upon exercise
 of the Rights or to distribute certificates which evidence fractional
 shares of Preferred Stock (other than fractions which are integral
 multiples of one one-hundredth of a share of Preferred Stock).  In lieu of
 fractional shares of Preferred Stock that are not integral multiples of one
 one-hundredth of a share of Preferred Stock, the Company may pay to the
 registered holders of Rights Certificates at the time such Rights are
 exercised as herein provided an amount in cash equal to the same fraction
 of the current market value of one one-hundredth of a share of Preferred
 Stock.  For purposes of this Section 14(b), the current market value of one
 one-hundredth of a share of Preferred Stock shall be one one-hundredth of
 the closing price of a share of Preferred Stock (as determined pursuant to
 Section 11(d)(ii) hereof) for the Trading Day immediately prior to the date
 of such exercise.

                (c)  Following the occurrence of a Triggering Event, the
 Company shall not be required to issue fractions of shares of Voting Stock
 upon exercise of the Rights or to distribute certificates which evidence
 fractional shares of Voting Stock.  In lieu of fractional shares of Voting
 Stock, the Company may pay to the registered holders of Rights Certificates
 at the time such Rights are exercised as herein provided an amount in cash
 equal to the same fraction of the current market value of one (1) share of
 Marathon Stock or one (1) share of Steel Stock, as the case may be.  For
 purposes of this Section 14(c), the Current Market Value of one share of
 Marathon Stock or Steel Stock, as the case may be, shall be the closing
 price of one share of such Marathon Stock or Steel Stock for the Trading
 Day immediately prior to the date of such exercise.

                (d)  The holder of a Right by the acceptance of the Rights
 expressly waives his right to receive any fractional Rights or any
 fractional shares upon exercise of a Right, except as permitted by this
 Section 14.

           Section 15.    Rights of Action.  All rights of action in respect
 of this Agreement are vested in the respective registered holders of the
 Rights Certificates (and, prior to the Distribution Date, the registered
 holders of the Voting Stock); and any registered holder of any Rights
 Certificate (or, prior to the Distribution Date, of the Voting Stock),
 without the consent of the Rights Agent or of the holder of any other
 Rights Certificate (or, prior to the Distribution Date, of the Voting
 Stock), may, in his own behalf and for his own benefit, enforce, and may
 institute and maintain any suit, action or proceeding against the Company
 to enforce, or otherwise act in respect of, his right to exercise the
 Rights evidenced by such Rights Certificate in the manner provided in such
 Rights Certificate and in this Agreement.  Without limiting the foregoing
 or any remedies available to the holders of Rights, it is specifically
 acknowledged that the holders of Rights would not have an adequate remedy
 at law for any breach of this Agreement and shall be entitled to specific
 performance of the obligations hereunder and injunctive relief against
 actual or threatened violations of the obligations hereunder of any Person
 subject to this Agreement.

           Section 16.    Agreement of Rights Holders.  Every holder of a
 Right by accepting the same consents and agrees with the Company and the
 Rights Agent and with every other holder of a Right that:

                (a)  prior to the Distribution Date, the Rights will be
 transferable only in connection with the transfer of Voting Stock;

                (b)  after the Distribution Date, the Rights Certificates
 are transferable only on the registry books of the Rights Agent if
 surrendered at the office or offices of the Rights Agent designated for
 such purposes, duly endorsed or accompanied by a proper instrument of
 transfer and with the appropriate forms and certificates fully executed;

                (c)  subject to Section 6(a) and Section 7(f) hereof, the
 Company and the Rights Agent may deem and treat the person in whose name a
 Rights Certificate (or, prior to the Distribution Date, the associated
 Voting Stock certificate) is registered as the absolute owner thereof and
 of the Rights evidenced thereby (notwithstanding any notations of ownership
 or writing on the Rights Certificates or the associated Voting Stock
 certificate made by anyone other than the Company or the Rights Agent) for
 all purposes whatsoever, and neither the Company nor the Rights Agent,
 subject to the last sentence of Section 7(e) hereof, shall be required to
 be affected by any notice to the contrary; and

                (d)  notwithstanding anything in this Agreement to the
 contrary, neither the Company nor the Rights Agent shall have any liability
 to any holder of a Right or other Person as a result of its inability to
 perform any of its obligations under this Agreement by reason of any
 preliminary or permanent injunction or other order, decree or ruling issued
 by a court of competent jurisdiction or by a governmental, regulatory or
 administrative agency or commission, or any statute, rule, regulation or
 executive order promulgated or enacted by any governmental authority,
 prohibiting or otherwise restraining performance of such obligation;
 provided, however, the Company must use its best efforts to have any such
 order, decree or ruling lifted or otherwise overturned as soon as possible.

           Section 17.    Rights Certificate Holder Not Deemed a
 Stockholder.  No holder, as such, of any Rights Certificate shall be
 entitled to vote, receive dividends or be deemed for any purpose the holder
 of the number of one one-hundredths of a share of Preferred Stock or any
 other securities of the Company which may at any time be issuable on the
 exercise of the Rights represented thereby, nor shall anything contained
 herein or in any Rights Certificate be construed to confer upon the holder
 of any Rights Certificate, as such, any of the rights of a stockholder of
 the Company or any right to vote for the election of directors or upon any
 matter submitted to stockholders at any meeting thereof, or to give or
 withhold consent to any corporate action, or to receive notice of meetings
 or other actions affecting stockholders (except as provided in Section 24
 hereof), or to receive dividends or subscription rights, or otherwise,
 until the Right or Rights evidenced by such Rights Certificate shall have
 been exercised in accordance with the provisions hereof.

           Section 18.    Concerning the Rights Agent.

                (a)  The Company agrees to pay to the Rights Agent
 reasonable compensation for all services rendered by it hereunder and, from
 time to time, on demand of the Rights Agent, its reasonable expenses and
 counsel fees and disbursements and other disbursements incurred in the
 administration, execution or amendment of this Agreement and the exercise
 and performance of its duties hereunder.  The Company also agrees to
 indemnify the Rights Agent for, and to hold it harmless against, any loss,
 liability, damage, judgment, fine, penalty, claim, demand, settlement, cost
 or expense, incurred without negligence, bad faith or willful misconduct
 (as finally determined by a court of competent jurisdiction) on the part of
 the Rights Agent, for anything done or omitted by the Rights Agent in
 connection with the acceptance and administration of this Agreement,
 including the costs and expenses of defending against any claim of
 liability in the premises.

                (b)  The Rights Agent shall be protected and shall incur no
 liability for or in respect of any action taken, suffered or omitted by it
 in connection with its administration of this Agreement in reliance upon
 any Rights Certificate or certificate for Voting Stock or for other
 securities of the Company, instrument of assignment or transfer, power of
 attorney, endorsement, affidavit, letter, notice, direction, consent,
 certificate, statement, or other paper or document believed by it to be
 genuine and to be signed, executed and, where necessary, verified or
 acknowledged, by the proper Person or Persons.

                (c)  Anything in this Agreement to the contrary
 notwithstanding, in no event shall the Rights Agent be liable for special,
 punitive, indirect, incidental or consequential loss or damage of any kind
 whatsoever (including, but not limited to, lost profits), even if the
 Rights Agent has been advised of the possibility of such loss or damage.

           Section 19.    Merger or Consolidation or Change of Name of
 Rights Agent.

                (a)  Any Person into which the Rights Agent or any successor
 Rights Agent may be merged or with which it may be consolidated, or any
 Person resulting from any merger or consolidation to which the Rights Agent
 or any successor Rights Agent shall be a party, or any Person succeeding to
 the shareholder services business of the Rights Agent or any successor
 Rights Agent, shall be the successor to the Rights Agent under this
 Agreement without the execution or filing of any paper or any further act
 on the part of any of the parties hereto; provided, however, that such
 Person would be eligible for appointment as a successor Rights Agent under
 the provisions of Section 21 hereof.  In case at the time such successor
 Rights Agent shall succeed to the agency created by this Agreement, any of
 the Rights Certificates shall have been countersigned but not delivered,
 any such successor Rights Agent may adopt the countersignature of a
 predecessor Rights Agent and deliver such Rights Certificates so
 countersigned; and in case at that time any of the Rights Certificates
 shall not have been countersigned, any successor Rights Agent may
 countersign such Rights Certificates either in the name of the predecessor
 or in the name of the successor Rights Agent; and in all such cases such
 Rights Certificates shall have the full force provided in the Rights
 Certificates and in this Agreement.

                (b)  In case at any time the name of the Rights Agent shall
 be changed and at such time any of the Rights Certificates shall have been
 countersigned but not delivered, the Rights Agent may adopt the
 countersignature under its prior name and deliver Rights Certificates so
 countersigned; and in case at that time any of the Rights Certificates
 shall not have been countersigned, the Rights Agent may countersign such
 Rights Certificates either in its prior name or in its changed name; and in
 all such cases such Rights Certificates shall have the full force provided
 in the Rights Certificates and in this Agreement.

           Section 20.    Duties of Rights Agent.  The Rights Agent
 undertakes the duties and obligations imposed by this Agreement upon the
 following terms and conditions, by all of which the Company and the holders
 of Rights Certificates, by their acceptance thereof, shall be bound.

                (a)  The Rights Agent may consult with legal counsel (who
 may be legal counsel for the Company), and the advice or opinion of such
 counsel shall be full and complete authorization and protection to the
 Rights Agent, and the Rights Agent shall incur no liability for or in
 respect of, any action taken or omitted by it in good faith and in
 accordance with such advice or opinion.

                (b)  Whenever in the performance of its duties under this
 Agreement the Rights Agent shall deem it necessary or desirable that any
 fact or matter (including, without limitation, the identity of any
 Acquiring Person and the determination of Current Market Price) be proved
 or established by the Company prior to taking or suffering any action
 hereunder, such fact or matter (unless other evidence in respect thereof be
 herein specifically prescribed) may be deemed to be conclusively proved and
 established by a certificate signed by the Chairman of the Board, the
 President, any Vice President, the Treasurer, any Assistant Treasurer, the
 Secretary or any Assistant Secretary of the Company and delivered to the
 Rights Agent; and such certificate shall be full authorization and
 protection to the Rights Agent, and the Rights Agent shall incur no
 liability for or in respect of, any action taken or suffered in good faith
 by it under the provisions of this Agreement in reliance upon such
 certificate.

                (c)  The Rights Agent shall be liable hereunder only for its
 own negligence, bad faith or willful misconduct (as finally determined by a
 court of competent jurisdiction).

                (d)  The Rights Agent shall not be liable for or by reason
 of any of the statements of fact or recitals contained in this Agreement or
 in the Rights Certificates or be required to verify the same (except as to
 its countersignature on such Rights Certificates), but all such statements
 and recitals are and shall be deemed to have been made by the Company only.

                (e)  The Rights Agent shall not be under any responsibility
 in respect of the validity of this Agreement or the execution and delivery
 hereof (except the due execution hereof by the Rights Agent) or in respect
 of the validity or execution of any Rights Certificate (except its
 countersignature thereof); nor shall it be responsible for any breach by
 the Company of any covenant or condition contained in this Agreement or in
 any Rights Certificate; nor shall it be responsible for any adjustment
 required under the provisions of Section 11 or Section 13 hereof or
 responsible for the manner, method or amount of any such adjustment or the
 ascertaining of the existence of facts that would require any such
 adjustment (except with respect to the exercise of Rights evidenced by
 Rights Certificates after actual notice of any such adjustment); nor shall
 it by any act hereunder be deemed to make any representation or warranty as
 to the authorization or reservation of any shares of Voting Stock or
 Preferred Stock to be issued pursuant to this Agreement or any Rights
 Certificate or as to whether any shares of Voting Stock or Preferred Stock
 will, when so issued, be validly authorized and issued, fully paid and
 nonassessable.

                (f)  The Company agrees that it will perform, execute,
 acknowledge and deliver or cause to be performed, executed, acknowledged
 and delivered all such further and other acts, instruments and assurances
 as may reasonably be required by the Rights Agent for the carrying out or
 performing by the Rights Agent of the provisions of this Agreement.

                (g)  The Rights Agent is hereby authorized and directed to
 accept instructions with respect to the performance of its duties hereunder
 from the Chairman of the Board, the President, any Vice President, the
 Secretary, any Assistant Secretary, the Treasurer or any Assistant
 Treasurer of the Company, and to apply to such officers for advice or
 instructions in connection with its duties, and it shall not be liable for
 any action taken or suffered to be taken by it in good faith in accordance
 with instructions of any such officer.

                (h)  The Rights Agent and any stockholder, affiliate,
 director, officer or employee of the Rights Agent may buy, sell or deal in
 any of the Rights or other securities of the Company or become pecuniarily
 interested in any transaction in which the Company may be interested, or
 contract with or lend money to the Company or otherwise act as fully and
 freely as though it were not Rights Agent under this Agreement.  Nothing
 herein shall preclude the Rights Agent from acting in any other capacity
 for the Company or for any other Person.

                (i)  The Rights Agent may execute and exercise any of the
 rights or powers hereby vested in it or perform any duty hereunder either
 itself or by or through its attorneys or agents, and the Rights Agent shall
 not be answerable or accountable for any act, default, neglect or
 misconduct of any such attorneys or agents or for any loss to the Company
 or any other Person resulting from any such act, default, neglect or
 misconduct; provided, however, reasonable care was exercised in the
 selection and continued employment thereof.

                (j)  No provision of this Agreement shall require the Rights
 Agent to expend or risk its own funds or otherwise incur any financial
 liability in the performance of any of its duties hereunder or in the
 exercise of its rights if there shall be reasonable grounds for believing
 that repayment of such funds or adequate indemnification against such risk
 or liability is not reasonably assured to it.

                (k)  If, with respect to any Rights Certificate surrendered
 to the Rights Agent for exercise or transfer, the certificate attached to
 the form of assignment or form of election to purchase, as the case may be,
 has either not been completed or indicates an affirmative response to
 clause 1 and/or 2 thereof, the Rights Agent shall not take any further
 action with respect to such requested exercise of transfer without first
 consulting with the Company.

           Section 21.    Change of Rights Agent.  The Rights Agent or any
 successor Rights Agent may resign and be discharged from its duties under
 this Agreement upon thirty (30) days' notice in writing mailed to the
 Company, and to each transfer agent of the Marathon Stock, Steel Stock and
 Preferred Stock, by registered or certified mail, and to the holders of the
 Rights Certificates by first-class mail.  The Company may remove the Rights
 Agent or any successor Rights Agent upon thirty (30) days' notice in
 writing, mailed to the Rights Agent or successor Rights Agent, as the case
 may be, and to each transfer agent of the Marathon Stock, Steel Stock and
 Preferred Stock, by registered or certified mail, and to the holders of the
 Rights Certificates by first-class mail.  If the Rights Agent shall resign
 or be removed or shall otherwise become incapable of acting, the Company
 shall appoint a successor to the Rights Agent.  If the Company shall fail
 to make such appointment within a period of thirty (30) days after giving
 notice of such removal or after it has been notified in writing of such
 resignation or incapacity by the resigning or incapacitated Rights Agent or
 by the holder of a Rights Certificate (who shall, with such notice, submit
 his Rights Certificate for inspection by the Company), then any registered
 holder of any Rights Certificate may apply to any court of competent
 jurisdiction for the appointment of a new Rights Agent.  Any successor
 Rights Agent, whether appointed by the Company or by such a court, shall be
 (a) a Person organized and doing business under the laws of the United
 States or of any state thereof so long as such Person is authorized to do
 business in the State of New York and is subject to supervision or
 examination by federal or state authority and which has at the time of its
 appointment as Rights Agent a combined capital and surplus of at least
 $50,000,000 or (b) any affiliate thereof.  After appointment, the successor
 Rights Agent shall be vested with the same powers, rights, duties and
 responsibilities as if it had been originally named as Rights Agent without
 further act or deed; but the predecessor Rights Agent shall deliver and
 transfer to the successor Rights Agent any property at the time held by it
 hereunder, and execute and deliver any further assurance, conveyance, act
 or deed necessary for the purpose.  Not later than the effective date of
 any such appointment, the Company shall file notice thereof in writing with
 the predecessor Rights Agent and each transfer agent of the Marathon Stock,
 Steel Stock and the Preferred Stock, and mail a notice thereof in writing
 to the registered holders of the Rights Certificates.  Failure to give any
 notice provided for in this Section 21, however, or any defect therein,
 shall not affect the legality or validity of the resignation or removal of
 the Rights Agent or the appointment of the successor Rights Agent, as the
 case may be.

           Section 22.    Issuance of New Rights Certificates.
 Notwithstanding any of the provisions of this Agreement or of the Rights to
 the contrary, the Company may, at its option, issue new Rights Certificates
 evidencing Rights in such form as may be approved by its Board of Directors
 to reflect any adjustment or change in the Purchase Price and the number or
 kind or class of shares or other securities or property purchasable under
 the Rights Certificates made in accordance with the provisions of this
 Agreement.  In addition, in connection with the issuance or sale of shares
 of Voting Stock following the Distribution Date and prior to the redemption
 or expiration of the Rights, the Company (a) shall, with respect to shares
 of Voting Stock so issued or sold pursuant to the exercise of stock options
 or under any employee plan or arrangement outstanding, granted or awarded
 prior to the Distribution Date, or upon the exercise, conversion or
 exchange of securities hereinafter issued by the Company, and (b) may, in
 any other case, if deemed necessary or appropriate by the Board of
 Directors, issue Rights Certificates representing the appropriate number of
 Rights in connection with such issuance or sale; provided, however, that
 (i) no such Rights Certificate shall be issued if, and to the extent that,
 the Company shall be advised by counsel that such issuance would create a
 significant risk of material adverse tax consequences to the Company or the
 Person to whom such Rights Certificate would be issued, and (ii) no such
 Rights Certificate shall be issued if, and to the extent that, appropriate
 adjustment shall otherwise have been made in lieu of the issuance thereof.

           Section 23.    Redemption and Termination.

                (a)  The Board of Directors may, at its option, at any time
 prior to the earlier of (i) the close of business on the tenth Business Day
 following the Stock Acquisition Date (or, if the Stock Acquisition Date
 shall have occurred prior to the Record Date, the close of business on the
 tenth Business Day following the Record Date), or (ii) the Final Expiration
 Date, redeem all but not less than all of the then outstanding Rights at a
 redemption price of $.0l per Right, as such amount may be appropriately
 adjusted to reflect any stock split, stock dividend or similar transaction
 occurring after the date hereof (such redemption price being hereinafter
 referred to as the "Redemption Price").  To encourage third parties seeking
 to acquire the Company to make a non-coercive offer which will maximize
 value for all stockholders, the Board of Directors shall consider, in
 determining whether to redeem the Rights in connection with any proposal or
 offer, whether such proposal or offer meets the requirements of a
 Qualifying Offer, and, if not, in which respects such offer or proposal
 fails to meet such requirements.  The Company may, at its option, pay the
 Redemption Price in cash, shares of Marathon Stock or Steel Stock (based on
 the Current Market Price of such shares at the time of redemption) or any
 other form of consideration deemed appropriate by the Board of Directors.
 Notwithstanding anything contained in this Agreement to the contrary, the
 Rights shall not be exercisable after the first occurrence of a Section
 11(a)(ii) Event until such time as the Company's right of redemption
 hereunder has expired.

                (b)  Immediately upon the action of the Board of Directors
 ordering the redemption of the Rights, evidence of which shall have been
 filed with the Rights Agent and without any further action and without any
 notice, the right to exercise the Rights will terminate and the only right
 thereafter of the holders of Rights shall be to receive the Redemption
 Price for each Right so held.  Promptly after the action of the Board of
 Directors ordering the redemption of the Rights, the Company shall give
 notice of such redemption to the Rights Agent and the holders of the then
 outstanding Rights by mailing such notice to all such holders at each
 holder's last address as it appears upon the registry books of the Rights
 Agent or, prior to the Distribution Date, on the registry books of the
 Transfer Agent for each of the Marathon Stock and Steel Stock.  Any notice
 which is mailed in the manner herein provided shall be deemed given,
 whether or not the holder receives the notice.  Each such notice of
 redemption will state the method by which the payment of the Redemption
 Price will be made.

           Section 24.    Notice of Certain Events.

                (a)  In case the Company shall propose, at any time after
 the Distribution Date, (i) to pay any dividend payable in stock of any
 class to the holders of Preferred Stock or to make any other distribution
 to the holders of Preferred Stock (other than a regular quarterly cash
 dividend out of earnings or retained earnings of the Company), or (ii) to
 offer to the holders of Preferred Stock rights or warrants to subscribe for
 or to purchase any additional shares of Preferred Stock or shares of stock
 of any class or any other securities, rights or options, or (iii) to effect
 any reclassification of its Preferred Stock (other than a reclassification
 involving only the subdivision of outstanding shares of Preferred Stock),
 or (iv) to effect any consolidation or merger into or with any other Person
 (other than a Subsidiary of the Company in a transaction which complies
 with Section 11(o) hereof), or to effect any sale or other transfer (or to
 permit one or more of its Subsidiaries to effect any sale or other
 transfer), in one transaction or a series of related transactions, of more
 than 50% of the assets, earning power or cash flow of the Company and its
 Subsidiaries (taken as a whole) to any other Person or Persons (other than
 the Company and/or any of its Subsidiaries in one or more transactions each
 of which complies with Section 11(o) hereof), or (v) to effect the
 liquidation, dissolution or winding up of the Company, then, in each such
 case, the Company shall give to each holder of a Rights Certificate, to the
 extent feasible and in accordance with Section 25 hereof, a notice of such
 proposed action, which shall specify the record date for the purposes of
 such stock dividend, distribution of rights or warrants, or the date on
 which such reclassification, consolidation, merger, sale, transfer,
 liquidation, dissolution, or winding up is to take place and the date of
 participation therein by the holders of the shares of Preferred Stock, if
 any such date is to be fixed, and such notice shall be so given in the case
 of any action covered by clause (i) or (ii) above at least twenty (20) days
 prior to the record date for determining holders of the shares of Preferred
 Stock for purposes of such action, and in the case of any such other
 action, at least twenty (20) days prior to the date of the taking of such
 proposed action or the date of participation therein by the holders of the
 shares of Preferred Stock, whichever shall be the earlier.

                (b)  In case any Section 11(a)(ii) Event hereof shall occur,
 then, in any such case, (i) the Company shall as soon as practicable
 thereafter give to each holder of a Rights Certificate, to the extent
 feasible and in accordance with Section 25 hereof, a notice of the
 occurrence of such event, which shall specify the event and the
 consequences of the event to holders of Rights under Section 11(a)(ii)
 hereof, and (ii) all references in the preceding paragraph to Preferred
 Stock shall be deemed thereafter to refer to Voting Stock and/or, if
 appropriate, other securities.

           Section 25.    Notices.  Notices or demands authorized by this
 Agreement to be given or made by the Rights Agent or by the holder of any
 Rights Certificate to or on the Company shall be sufficiently given or made
 if sent by first-class mail, postage prepaid, addressed (until another
 address is filed in writing with the Rights Agent) as follows:

           USX Corporation
           600 Grant Street
           Pittsburgh, Pennsylvania  15219-4776
           Attention:  Corporate Secretary

 Subject to the provisions of Section 21, any notice or demand authorized by
 this Agreement to be given or made by the Company or by the holder of any
 Rights Certificate to or on the Rights Agent shall be sufficiently given or
 made if sent by first-class mail, postage prepaid, addressed (until another
 address is filed in writing with the Company) as follows:

           ChaseMellon Shareholder Services, L.L.C.
           One Mellon Bank Center
           500 Grant Street
           Room 2122
           Pittsburgh, Pennsylvania  15258-0001
           Attention:  Relationship Manager

 Notices or demands authorized by this Agreement to be given or made by the
 Company or the Rights Agent to the holder of any Rights Certificate (or, if
 prior to the Distribution Date, to the holder of certificates representing
 shares of Voting Stock) shall be sufficiently given or made if sent by
 first-class mail, postage prepaid, addressed to such holder at the address
 of such holder as shown on the registry books of the Company.

 In the event that the Company is required to make a public announcement or
 provide notice to the holders of Rights Certificates pursuant to any
 provision of this Agreement, it shall provide such announcement or notice
 to the Rights Agent on or prior to the date of such announcement or
 provision of notice.

           Section 26.    Supplements and Amendments.  Prior to the
 Distribution Date, and subject to the last sentence of this Section 26, the
 Company and the Rights Agent shall, if the Company so directs, supplement
 or amend any provision of this Agreement without the approval of any
 holders of certificates representing shares of Voting Stock.  From and
 after the Distribution Date, the Company and the Rights Agent shall, if the
 Company so directs, supplement or amend this Agreement without the approval
 of any holders of Rights Certificates in order (i) to cure any ambiguity,
 (ii) to correct or supplement any provision contained herein which may be
 defective or inconsistent with any other provisions herein, (iii) to
 shorten or lengthen any time period hereunder, or (iv) to change or
 supplement the provisions hereunder in any manner which the Company may
 deem necessary or desirable and which shall not adversely affect the
 interests of the Rights Agent or the holders of Rights Certificates (other
 than an Acquiring Person or an Affiliate or Associate of an Acquiring
 Person); provided, this Agreement may not be supplemented or amended to
 lengthen, pursuant to clause (iii) of this sentence, (A) a time period
 relating to when the Rights may be redeemed at such time as the Rights are
 not then redeemable, or (B) any other time period, unless such lengthening
 is for the purpose of protecting, enhancing or clarifying the rights of,
 and/or the benefits to, the holders of Rights.  Upon the delivery of a
 certificate from an appropriate officer of the Company which states that
 the proposed supplement or amendment is in compliance with the terms of
 this Section 26 and provided such supplement or amendment does not
 adversely affect the Rights Agent's duties, liabilities or obligations
 hereunder, the Rights Agent shall execute such supplement or amendment.
 Prior to the Distribution Date, the interests of the holders of Rights
 shall be deemed coincident with the interests of the holders of Voting
 Stock.  Notwithstanding anything herein to the contrary, this Agreement may
 not be amended at a time when the Rights are not redeemable.

           Section 27.    Successors.  All the covenants and provisions of
 this Agreement by or for the benefit of the Company or the Rights Agent
 shall bind and inure to the benefit of their respective successors and
 assigns hereunder.

           Section 28.    Determinations and Actions by the Board of
 Directors, etc.  For all purposes of this Agreement, any calculation of the
 Voting Power or the number of shares of Voting Stock outstanding at any
 particular time, including for purposes of determining the particular
 percentage of Voting Power or such outstanding shares of Voting Stock of
 which any Person is the Beneficial Owner, shall be made in accordance with
 the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and
 Regulations under the Exchange Act.  The Board of Directors shall have the
 exclusive power and authority to administer this Agreement and to exercise
 all rights and powers specifically granted to the Board of Directors or to
 the Company, or as may be necessary or advisable in the administration of
 this Agreement, including, without limitation, the right and power to (i)
 interpret the provisions of this Agreement, (ii) make all determinations
 deemed necessary or advisable for the administration of this Agreement
 (including a determination to redeem or not redeem the Rights or to amend
 the Agreement) and (iii) calculate from time to time the Voting Power and
 the relative voting power of the Marathon Stock and the Steel Stock, in
 accordance with the Company's Restated Certificate of Incorporation.  All
 such actions, calculations, interpretations and determinations (including,
 for purposes of clause (y) below, all omissions with respect to the
 foregoing) which are done or made by the Board of Directors in good faith,
 shall (x) be final, conclusive and binding on the Company, the Rights
 Agent, the holders of the Rights and all other Persons, and (y) not subject
 the Board of Directors or any directors on the Board of Directors to any
 liability to the holders of the Rights.  Nothing contained in this
 Agreement shall be deemed to be in derogation of the obligation of the
 Board of Directors to exercise its fiduciary duty or shall be construed to
 suggest or imply that the Board of Directors shall not be entitled to
 reject any Qualifying Offer, or to recommend that holders of shares of
 Voting Stock reject any Qualifying Offer, or to take any other action
 (including, without limitation, commencing, prosecuting, defending or
 settling any litigation, recommending that stockholders tender into any
 other offer, taking any action permitted under any applicable state laws or
 proposing or engaging, at any time, in any acquisition, disposition or
 other transfer of any securities of the Company, any merger or
 consolidation involving the Company, any sale or other transfer of assets
 of the Company, any recapitalization, liquidation, dissolution or winding
 up of the Company, or any other business combination or other transaction)
 with respect to any Qualifying Offer that the Board of Directors believes
 is necessary or appropriate in the exercise of such fiduciary duty.

           Section 29.    Exchange.

                (a)  The Board of Directors may, at its option, at any time
 after any Person becomes an Acquiring Person, exchange all or part of the
 then outstanding and exercisable Marathon Rights and Steel Rights (which
 shall not include Rights that have become void pursuant to the provision of
 Section 7(e) hereof), as the case may be, for shares of Marathon Stock or
 Steel Stock, respectively, at an exchange ratio of one share of Marathon
 Stock per Marathon Right and one share of Steel Stock per Steel Right, and
 appropriately adjusted to reflect any stock split, stock dividend or
 similar transaction occurring after the date hereof (such exchange ratio
 being hereinafter referred to as the "Exchange Ratio").  Notwithstanding
 the foregoing, the Board of Directors shall not be empowered to effect such
 exchange at any time after any Person (other than the Company, any
 Subsidiary of the Company, any employee benefit plan of the Company or any
 such Subsidiary, or any entity holding shares of Voting Stock for or
 pursuant to the terms of any such plan), together with all Affiliates and
 Associates of such Person, becomes the Beneficial Owner of shares of Voting
 Stock representing 50% or more of the Voting Power of the Company.

                (b)  Immediately upon the action of the Board of Directors
 ordering the exchange of any Rights pursuant to subsection (a) of this
 Section 29 and without any further action and without any notice, the right
 to exercise such Rights shall terminate and the only right thereafter of a
 holder of such Marathon Rights and Steel Rights, as the case may be, shall
 be to receive that number of shares of Marathon Stock and Steel Stock,
 respectively, equal to the number of such Rights held by such holder
 multiplied by the Exchange Ratio.  The Company shall promptly give public
 notice of any such exchange; provided, however, that the failure to give,
 or any defect in, such notice shall not affect the validity of such
 exchange.  The Company promptly shall mail a notice of any such exchange to
 all of the holders of such Rights at their last addresses as they appear
 upon the registry books of the Rights Agent.  Any notice which is mailed in
 the manner herein provided shall be deemed given, whether or not the holder
 receives the notice.  Each such notice of exchange will state the method by
 which the exchange of the shares of Voting Stock for Rights will be
 effected and, in the event of any partial exchange, the number of Rights
 which will be exchanged.  Any partial exchange shall be affected pro rata
 based on the number of Rights (other than Rights which have become void
 pursuant to the provisions of Section 7(e) hereof) held by each holder of
 Rights.

                (c)  In any exchange pursuant to this Section 29, the
 Company, at its option, may substitute Preferred Stock (or Equivalent
 Preferred Stock, as such term is defined in Section 11(b) hereof) for
 shares of Voting Stock exchangeable for Rights, at the initial rate of one
 one-hundredths of a share of Preferred Stock (or Equivalent Preferred
 Stock) for each share of Voting Stock, as appropriately adjusted to reflect
 stock splits, stock dividends or other similar transactions after the date
 hereof.

                (d)  In the event that there shall not be sufficient shares
 of Voting Stock issued but not outstanding or authorized but unissued to
 permit any exchange of Rights as contemplated in accordance with this
 Section 29, the Company shall take all such action as may be necessary to
 authorize additional shares of Marathon Stock or Steel Stock, as the case
 may be, for issuance upon exchange of the Rights.

                (e)  The Company shall not be required to issue fractions of
 shares of Voting Stock or to distribute certificates which evidence
 fractional shares of Voting Stock.  In lieu of such fractional shares of
 Voting Stock, there shall be paid to the registered holders of the Rights
 Certificates with regard to which such fractional shares of Voting Stock
 would otherwise be issuable, an amount in cash equal to the same fraction
 of the current market value of a whole share of Marathon Stock or Steel
 Stock, as the case may be.  For the purposes of this subsection (e), the
 current market value of a whole share of Marathon Stock or Steel Stock
 shall be the closing price of such share of Marathon Stock or Steel Stock
 (as determined pursuant to Section 11(d)(i) hereof) for the Trading Day
 immediately prior to the date of exchange pursuant to this Section 29.

           Section 30.    Benefits of this Agreement.  Nothing in this
 Agreement shall be construed to give to any Person other than the Company,
 the Rights Agent and the registered holders of the Rights Certificates
 (and, prior to the Distribution Date, registered holders of the Voting
 Stock) any legal or equitable right, remedy or claim under this Agreement;
 but this Agreement shall be for the sole and exclusive benefit of the
 Company, the Rights Agent and the registered holders of the Rights
 Certificates (and, prior to the Distribution Date, registered holders of
 the Voting Stock).

           Section 31.    Severability.  If any term, provision, covenant or
 restriction of this Agreement is held by a court of competent jurisdiction
 or other authority to be invalid, void or unenforceable, the remainder of
 the terms, provisions, covenants and restrictions of this Agreement shall
 remain in full force and effect and shall in no way be affected, impaired
 or invalidated; provided, however, that notwithstanding anything in this
 Agreement to the contrary, if any such term, provision, covenant or
 restriction is held by such court or authority to be invalid, void or
 unenforceable and the Board of Directors determines in its good faith
 judgment that severing the invalid language from this Agreement would
 adversely affect the purpose or effect of this Agreement, the right of
 redemption set forth in Section 23 hereof (if it has expired) shall be
 reinstated and shall not expire until the close of business on the tenth
 day following the date of such determination by the Board of Directors and
 the Company shall promptly notify the Rights Agent of such reinstatement.

           Section 32.    Governing Law.  This Agreement, each Right and
 each Rights Certificate issued hereunder shall be deemed to be a contract
 made under the laws of the State of Delaware and for all purposes shall be
 governed by and construed in accordance with the laws of such State
 applicable to contracts made and to be performed entirely within such
 State; provided, however, that all provisions regarding the rights, duties
 and obligations of the Rights Agent shall be governed by and construed in
 accordance with the laws of the State of New York applicable to contracts
 made and to be performed entirely within such State.

           Section 33.    Counterparts.  This Agreement may be executed in
 any number of counterparts and each of such counterparts shall for all
 purposes be deemed to be an original, and all such counterparts shall
 together constitute but one and the same instrument.

           Section 34.    Descriptive Headings.  Descriptive headings of the
 several Sections of this Agreement are inserted for convenience only and
 shall not control or affect the meaning or construction of any of the
 provisions hereof.


                          [SIGNATURE PAGE FOLLOWS]


      IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
 be duly executed as of the day and year first above written.


                             USX CORPORATION



                             By:  /s/ Kenneth L. Matheny
                                  _______________________________
                             Name:  Kenneth L. Matheny
                             Title: Vice President & Comptroller



                             CHASEMELLON SHAREHOLDER SERVICES, L.L.C.



                             By: /s/ Marilyn Spisak
                                 _______________________________
                             Name:  Marilyn Spisak
                             Title: Vice President


                                                                  Exhibit A


                         SUMMARY OF RIGHTS TO PURCHASE
                                PREFERRED STOCK


      On September 28, 1999, the Board of Directors of USX Corporation (the
 "Company") adopted a Stockholder Rights Plan and declared a dividend
 distribution of (i) one USX-U.S. Steel Group Right (a "Steel Right") for
 each outstanding share of USX-U.S. Steel Group Common Stock ("Steel Stock")
 and (ii) one USX-Marathon Group Right (a "Marathon Right" and, together
 with the Steel Rights, the "Rights") for each share of USX-Marathon Group
 Common Stock ("Marathon Stock" and, together with the Steel Stock, the
 "Voting Stock") to stockholders of record at the close of business on
 October 9, 1999 (the "Record Date").  Each Right entitles the registered
 holder to purchase from the Company a unit consisting of one one-hundredth
 of a share (a "Unit") of Series A Junior Preferred Stock, no par value (the
 "Preferred Stock"), at a Purchase Price of $110 in cash per Unit, subject
 to adjustment.  The description and terms of the Rights are set forth in a
 Rights Agreement (the "Rights Agreement") between the Company and
 ChaseMellon Shareholder Services, L.L.C., a New Jersey limited liability
 company, as Rights Agent.

      Initially, the Marathon Rights and the Steel Rights will be attached
 to all certificates representing shares of Marathon Stock and Steel Stock,
 respectively, then outstanding, and no separate Rights Certificates will be
 distributed.  Subject to certain exceptions specified in the Rights
 Agreement, the Marathon Rights and the Steel Rights will separate from the
 certificates representing shares of Marathon Stock and Steel Stock,
 respectively, and a Distribution Date will occur upon the earlier of (i) 10
 business days following a public announcement that a person or group of
 affiliated or associated persons (an "Acquiring Person") has acquired, or
 obtained the right to acquire, beneficial ownership of Voting Stock
 representing 15% or more of the outstanding Voting Power of the Company
 (the "Stock Acquisition Date") other than as a result of the Company's
 calculation from time to time of the relative voting rights of the Marathon
 Stock and Steel Stock, repurchases of stock by the Company or certain
 inadvertent actions by institutional or certain other stockholders, or (ii)
 10 business days (or such later date as the Board of Directors shall
 determine) following the commencement of a tender offer or exchange offer
 that would result in a person or group becoming an Acquiring Person.  Until
 the Distribution Date, (i) the Marathon Rights and the Steel Rights will be
 evidenced by the certificates representing shares of Marathon Stock and
 Steel Stock, respectively, and will be transferred with and only with such
 certificates, (ii) new Marathon Stock and Steel Stock certificates issued
 after the Record Date will contain a notation incorporating the Rights
 Agreement by reference and (iii) the surrender for transfer of any
 certificates for Marathon Stock and Steel Stock outstanding will also
 constitute the transfer of the Marathon Rights and Steel Rights,
 respectively, associated with the Marathon Stock and Steel Stock
 represented by such certificate.

      The Rights are not exercisable until the Distribution Date and will
 expire at the close of business on October 9, 2009, unless such date is
 extended or the Rights are earlier redeemed or exchanged by the Company as
 described below.  Pursuant to the Rights Agreement, the Company reserves
 the right to require prior to the occurrence of a Triggering Event (as
 defined below) that, upon any exercise of Rights, a number of Rights be
 exercised so that only whole shares (or fractions which are integral
 multiples of one one-hundredth of a share) of Preferred Stock will be
 issued.

      As soon as practicable after the Distribution Date, Certificates for
 Marathon Rights and Steel Rights will be mailed to holders of record of the
 Marathon Stock and Steel Stock, respectively, as of the close of business
 on the Distribution Date and, thereafter, the separate Certificates for
 Marathon Rights and Steel Rights alone will represent the Marathon Rights
 and Steel Rights, respectively.  Except as otherwise determined by the
 Board of Directors, Rights will be issued in connection with all shares of
 Voting Stock issued by the Company, including shares of Voting Stock issued
 upon the exercise of employee stock options or the conversion of
 convertible securities issued after October 9, 1999 but prior to the
 Distribution Date.

      In the event that a Person becomes an Acquiring Person, except
 pursuant to a Qualifying Offer (as defined below), each holder of a
 Marathon Right or Steel Right (other than the Acquiring Person and certain
 related parties) will thereafter have the right to receive, upon exercise,
 Marathon Stock or Steel Stock, respectively (or, in certain circumstances,
 cash, property or other securities of the Company) having a value equal to
 two times the exercise price of the Marathon Right or Steel Right.
 However, Rights are not exercisable until such time as the Rights are no
 longer redeemable by the Company, as set forth below.  A "Qualifying Offer"
 is defined as an all-cash tender offer for all outstanding Marathon Stock
 and Steel Stock that is fully financed, remains open for a period of at
 least 45 Business Days, results in the offeror owning shares of Voting
 Stock representing a majority of the Voting Power as of the day immediately
 prior to the date of announcement of such offer, assures a prompt second-
 step acquisition of shares not purchased in the initial offer at the same
 price as the initial offer and meets certain other requirements.

      For example, at an exercise price of $110 per Right, each Marathon
 Right or Steel Right not owned by an Acquiring Person (or by certain
 related parties) following an event set forth in the preceding paragraph
 would entitle its holder to purchase $220 worth of Marathon Stock or Steel
 Stock, respectively (or other consideration, as noted above) for $110.
 Assuming that the Marathon Stock or Steel Stock, respectively, as the case
 may be, had a per share value of $55 at such time, the holder of each valid
 Marathon Right or Steel Right would be entitled to purchase four shares of
 Marathon Stock or Steel Stock, respectively, for $110.

      In the event that, at any time following the Stock Acquisition Date,
 (i) the Company engages in a merger or other business combination
 transaction in which the Company is not the surviving corporation, (ii) the
 Company engages in a merger or other business transaction in which the
 Company is the surviving corporation and the Voting Stock is changed or
 exchanged, or (iii) 50% or more of the Company's assets or earning power is
 sold or transferred, each holder of a Right (other than Rights that
 previously have been voided as set forth above) shall thereafter have the
 right to receive, upon exercise, Common Stock of the acquiring company
 having a value equal to two times the exercise price of the Right.  The
 events set forth in this paragraph and in the second preceding paragraph
 are referred to as the "Triggering Events."

      The Purchase Price payable, and the number of Units of Preferred Stock
 or other securities or property issuable, upon exercise of the Rights are
 subject to adjustment from time to time to prevent dilution (i) in the
 event of a stock dividend on, or a subdivision, combination or
 reclassification of, the Preferred Stock, (ii) if holders of the Preferred
 Stock are granted certain rights or warrants to subscribe for Preferred
 Stock or convertible securities at less than the Current Market Price of
 the Preferred Stock, or (iii) upon the distribution to holders of the
 Preferred Stock of evidences of indebtedness or assets (excluding regular
 quarterly cash dividends) or of subscription rights or warrants (other than
 those referred to above).

      With certain exceptions, no adjustment in the Purchase Price will be
 required until cumulative adjustments amount to at least 1% of the Purchase
 Price.  No fractional Units will be issued and, in lieu thereof, an
 adjustment in cash will be made based on the market price of the Preferred
 Stock on the last trading date prior to the date of exercise.

      Up to and including the tenth business day after the Stock Acquisition
 Date (subject to extension), the Company may redeem the Rights in whole,
 but not in part, at a price of $.01 per Right payable in stock or cash or
 any other form of consideration deemed appropriate by the Board of
 Directors (the "Redemption Price").  Immediately upon the action of the
 Board of Directors ordering redemption of the Rights, the Rights will
 terminate and the only right of the holders of Rights will be to receive
 the Redemption Price.

      The Board of Directors may, at its option, at any time after any
 Person becomes an Acquiring Person, exchange all or part of the outstanding
 and exercisable Marathon Rights and Steel Rights (other than Rights held by
 the Acquiring Person and certain related parties) for shares of Marathon
 Stock or Steel Stock, respectively, at an exchange ratio of one share of
 Marathon Stock or Steel Stock per Marathon Right or Steel Right,
 respectively (subject to certain anti-dilution adjustments).  However, the
 Board of Directors may not effect such an exchange at any time any Person
 or group owns Voting Stock representing 50% or more of the Voting Power of
 the Company then outstanding.  Immediately after the Board of Directors
 orders such an exchange, the right to exercise the Marathon Rights and
 Steel Rights shall terminate and the holders of Marathon Rights and Steel
 Rights shall thereafter only be entitled to receive shares of Marathon
 Stock and Steel Stock, respectively, at the applicable exchange ratio.

      Until a Right is exercised, the holder thereof, as such, will have no
 rights as a stockholder of the Company, including, without limitation, the
 right to vote or to receive dividends.  While the distribution of the
 Rights will not be taxable to stockholders or to the Company, stockholders
 may, depending upon the circumstances, recognize taxable income in the
 event that the Marathon Rights and Steel Rights become exercisable for
 Marathon Stock or Steel Stock, respectively (or other consideration), of
 the Company or for Common Stock of the acquiring company as set forth
 above.

      Any of the provisions of the Rights Agreement may be amended by the
 Board of Directors prior to the Distribution Date.  After the Distribution
 Date, the provisions of the Rights Agreement may be amended by the Board of
 Directors in order to cure any ambiguity, to make changes which do not
 adversely affect the interests of holders of Rights, or to shorten or
 lengthen any time period under the Rights Agreement.  The foregoing
 notwithstanding, no amendment may be made at such time as the Rights are
 not redeemable.

      A copy of the Rights Agreement is being filed with the Securities and
 Exchange Commission as an Exhibit to a Registration Statement on Form 8-A.
 A copy of the Rights Agreement is available free of charge from the Rights
 Agent.  This summary description of the Rights does not purport to be
 complete and is qualified in its entirety by reference to the Rights
 Agreement, which is incorporated herein by reference.

                                                                  Exhibit B

                          [Form of Rights Certificate]


 Certificate No- R-                                        _________ Rights

 NOT EXERCISABLE AFTER OCTOBER 9, 2009 UNLESS EXTENDED PRIOR THERETO BY THE
 BOARD OF DIRECTORS OR EARLIER IF REDEEMED BY THE COMPANY.  THE RIGHTS ARE
 SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT $.0l PER RIGHT ON
 THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.  UNDER CERTAIN CIRCUMSTANCES,
 RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON (AS SUCH TERM IS DEFINED
 IN THE RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH RIGHTS MAY
 BECOME NULL AND VOID. [THE RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE
 ARE OR WERE BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING
 PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS
 ARE DEFINED IN THE RIGHTS AGREEMENT).  ACCORDINGLY, THIS RIGHTS CERTIFICATE
 AND THE RIGHTS REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE
 CIRCUMSTANCES SPECIFIED IN SECTION 7(e) OF SUCH AGREEMENT.]  1
__________________
 1
      The portion of the legend in brackets shall be inserted only if
      applicable and shall replace the preceding sentence.


                               Rights Certificate

                                 USX CORPORATION

      This certifies that

 , or registered assigns, is the registered owner of the number of Rights
 set forth above, each of which entitles the owner thereof, subject to the
 terms, provisions and conditions of the Rights Agreement, dated as of
 September 28, 1999 (the "Rights Agreement"), between USX Corporation, a
 Delaware corporation (the "Company"), and ChaseMellon Shareholder Services,
 L.L.C., a New Jersey limited liability company (the "Rights Agent"), to
 purchase from the Company at any time prior to 5:00 P.M. (New York City
 time) on October 9, 2009 (unless extended prior thereto by the Board of
 Directors) at the office or offices of the Rights Agent designated for such
 purpose, or its successors as Rights Agent, one one-hundredth of a fully
 paid, non-assessable share of Series A Junior Preferred Stock (the
 "Preferred Stock") of the Company, at a purchase price of $110 in cash per
 one one-hundredth of a share (the "Purchase Price"), upon presentation and
 surrender of this Rights Certificate with the Form of Election to Purchase
 and related Certificate duly executed.  The number of Rights evidenced by
 this Rights Certificate (and the number of shares that may be purchased
 upon exercise thereof) set forth above, and the Purchase Price per share
 set forth above, are the number and Purchase Price as of October 9, 1999,
 based on the Preferred Stock as constituted at such date.  Pursuant to the
 Rights Agreement, the Company reserves the right to require prior to the
 occurrence of a Triggering Event (as such term is defined in the Rights
 Agreement) that, upon any exercise of Rights, a number of Rights be
 exercised so that only whole shares of Preferred Stock will be issued.

      Upon the occurrence of a Section 11(a)(ii) Event (as such term is
 defined in the Rights Agreement), if the Rights evidenced by this Rights
 Certificate are beneficially owned by (i) an Acquiring Person or an
 Affiliate or Associate of any such Acquiring Person (as such terms are
 defined in the Rights Agreement), (ii) a transferee of any such Acquiring
 Person, Associate or Affiliate, or (iii) under certain circumstances
 specified in the Rights Agreement, a transferee of a person who, after such
 transfer, became an Acquiring Person or an Affiliate or Associate of an
 Acquiring Person, such Rights shall become null and void and no holder
 hereof shall have any right with respect to such Rights from and after the
 occurrence of such Section 11(a)(ii) Event.

      As provided in the Rights Agreement, the Purchase Price and the number
 and kind of shares of Preferred Stock or other securities, which may be
 purchased upon the exercise of the Rights evidenced by this Rights
 Certificate are subject to modification and adjustment upon the happening
 of certain events, including Triggering Events.

      This Rights Certificate is subject to all of the terms, provisions and
 conditions of the Rights Agreement, which terms, provisions and conditions
 are hereby incorporated herein by reference and made a part hereof and to
 which Rights Agreement reference is hereby made for a full description of
 the rights, limitations of rights, obligations, duties and immunities
 hereunder of the Rights Agent, the Company and the holders of the Rights
 Certificates, which limitations of rights including the temporary
 suspension of the exercisability of such Rights under the specific
 circumstances set forth in the Rights Agreement.  Copies of the Rights
 Agreement are on file at the office of the Rights Agent designated for such
 purpose and are also available upon written request to the Rights Agent.

      This Rights Certificate, with or without other Rights Certificates,
 upon surrender at the office or offices of the Rights Agent designated for
 such purpose, may be exchanged for another Rights Certificate or Rights
 Certificates of like tenor and date evidencing Rights entitling the holder
 to purchase a like aggregate number of one one-hundredths of a share of
 Preferred Stock as the Rights evidenced by the Rights Certificate or Rights
 Certificates surrendered shall have entitled such holder to purchase.  If
 this Rights Certificate shall be exercised in part, the holder shall be
 entitled to receive upon surrender hereof another Rights Certificate or
 Rights Certificates for the number of whole Rights not exercised.

      Subject to the provisions of the Rights Agreement, the Rights
 evidenced by this Certificate may be redeemed by the Company at its option
 at a redemption price of $.01 per Right (payable in cash or stock or any
 other form of consideration deemed appropriate by the Board of Directors as
 set forth in the Rights Agreement) (the "Redemption Price") at any time
 prior to the earlier of the close of business on (i) the tenth Business Day
 following the Stock Acquisition Date (as such time period may be extended
 pursuant to the Rights Agreement), and (ii) the Final Expiration Date.  In
 addition, under certain circumstances following the Stock Acquisition Date,
 the Rights may be exchanged, in whole or in part, for shares of the Voting
 Stock, or shares of preference stock of the Company having essentially the
 same value or economic rights as such shares.  Immediately upon the action
 of the Board of Directors authorizing any such exchange, and without any
 further action or any notice, the Rights (other than Rights which are not
 subject to such exchange) will terminate and the Rights will only enable
 holders to receive the shares issuable upon such exchange.

      No fractional shares of Preferred Stock will be issued upon the
 exercise of any Right or Rights evidenced hereby (other than fractions
 which are integral multiples of one one-hundredth of a share of Preferred
 Stock, which may, at the election of the Company, be evidenced by
 depositary receipts), but in lieu thereof a cash payment will be made, as
 provided in the Rights Agreement.  The Company, at its election, may
 require that a number of Rights be exercised so that only whole shares of
 Preferred Stock would be issued.

      No holder of this Rights Certificate shall be entitled to vote or
 receive dividends or be deemed for any purpose the holder of shares of
 Preferred Stock or of any other securities of the Company which may at any
 time be issuable on the exercise hereof, nor shall anything contained in
 the Rights Agreement or herein be construed to confer upon the holder
 hereof, as such, any of the rights of a stockholder of the Company or any
 right to vote for the election of directors or upon any matter submitted to
 stockholders at any meeting thereof, or to give or withhold consent to any
 corporate action, or to receive notice of meetings or other actions
 affecting stockholders (except as provided in the Rights Agreement), or to
 receive dividends or subscription rights, or otherwise, until the Right or
 Rights evidenced by this Rights Certificate shall have been exercised as
 provided in the Rights Agreement.

      This Rights Certificate shall not be valid or obligatory for any
 purpose until it shall have been countersigned by the Rights Agent.

      WITNESS the facsimile signature of the proper officers of the Company
 and its corporate seal.


 Dated as of _________________, ____


 ATTEST:                                USX CORPORATION


  _____________________________         By ___________________________
           Secretary                       Title:


 Countersigned:

 CHASEMELLON SHAREHOLDER SERVICES, L.L.C.

 By _____________________________
        Authorized Signature

                  [Form of Reverse Side of Rights Certificate]

                              FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
               holder desires to transfer the Rights Certificate)

 FOR VALUE RECEIVED ______________________________ hereby

 sells, assigns and transfers unto ____________________________________

 ______________________________________________________________________
                   (Print name and address of transferee)
 ______________________________________________________________________

 this Rights Certificate, together with all right, title and interest
 therein, and does hereby irrevocably constitute and appoint ___________,
 Attorney, to transfer the within Rights Certificate on the books of
 the within-named Company, with full power of substitution.

 Dated: ____________, _____


                                     _________________________________
                                     Signature

 Signature Guaranteed:


                                  Certificate

      The undersigned hereby certifies by checking the appropriate boxes
 that:

      (1)  this Rights Certificate [          ] is [        ] is not being
 sold, assigned and transferred by or on behalf of a Person who is or was an
 Acquiring Person or an Affiliate or Associate of any such Acquiring Person
 (as such terms are defined pursuant to the Rights Agreement);

      (2)  after due inquiry and to the best knowledge of the undersigned,
 it [     ] did [      ] did not acquire the Rights evidenced by this Rights
 Certificate from any Person who is, was or subsequently became an Acquiring
 Person or an Affiliate or Associate of an Acquiring Person.


 Dated: ____________, ____     _______________________________
                               Signature

 Signature Guaranteed:

                                    NOTICE


      The signature to the foregoing Assignment and Certificate must
 correspond to the name as written upon the face of this Rights Certificate
 in every particular, without alteration or enlargement or any change
 whatsoever.


                         FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                       exercise Rights represented by the
                               Rights Certificate)

 To:  USX CORPORATION:

      The undersigned hereby irrevocably elects to exercise ______  Rights
 represented by this Rights Certificate to purchase the shares of Preferred
 Stock issuable upon the exercise of the Rights (or such other securities of
 the Company or of any other person which may be issuable upon the exercise
 of the Rights) and requests that certificates for such shares be issued in
 the name of and delivered to:

 Please insert social security
 or other identifying number

  ____________________________________________________________________
                      (Please print name and address)

  ____________________________________________________________________


      If such number of Rights shall not be all the Rights evidenced by this
 Rights Certificate, a new Rights Certificate for the balance of such Rights
 shall be registered in the name of and delivered to:

 Please insert social security
 or other identifying number

  ___________________________________________________________________
                      (Please print name and address)

  ___________________________________________________________________


 Dated: _____________, _____

                               ______________________________
                               Signature
 Signature Guaranteed:


                                  Certificate


      The undersigned hereby certifies by checking the appropriate boxes
 that:

      (1)  the Rights evidenced by this Rights Certificate [     ] are [   ]
 are not being exercised by or on behalf of a Person who is or was an
 Acquiring Person or an Affiliate or Associate of any such Acquiring Person
 (as such terms are defined pursuant to the Rights Agreement);

      (2)  after due inquiry and to the best knowledge of the undersigned,
 it [     ] did [     ] did not acquire the Rights evidenced by this Rights
 Certificate from any Person who is, was or became an Acquiring Person or an
 Affiliate or Associate of an Acquiring Person.


 Dated: _________ , 19         __________________________
                               Signature

 Signature Guaranteed:


                                    NOTICE


      The signature to the foregoing Election to Purchase and Certificate
 must correspond to the name as written upon the face of this Rights
 Certificate in every particular, without alteration or enlargement or any
 change whatsoever.


                                                                Exhibit B-1



                    [FORM OF MARATHON RIGHTS CERTIFICATE]



 Certificate No. R-                                         Marathon Rights

 NOT EXERCISABLE AFTER OCTOBER 9, 2009 UNLESS EXTENDED PRIOR THERETO BY THE
 BOARD OF DIRECTORS OR EARLIER IF REDEEMED BY THE COMPANY.  THE USX-MARATHON
 GROUP RIGHTS ("MARATHON RIGHTS") ARE SUBJECT TO REDEMPTION, AT THE OPTION
 OF THE COMPANY, AT $.0l PER MARATHON RIGHT ON THE TERMS SET FORTH IN THE
 RIGHTS AGREEMENT.  UNDER CERTAIN CIRCUMSTANCES, MARATHON RIGHTS
 BENEFICIALLY OWNED BY AN ACQUIRING PERSON (AS SUCH TERM IS DEFINED IN THE
 RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH MARATHON RIGHTS MAY
 BECOME NULL AND VOID. [THE MARATHON RIGHTS REPRESENTED BY THIS MARATHON
 RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY OWNED BY A PERSON WHO WAS OR
 BECAME AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING
 PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).  ACCORDINGLY,
 THIS MARATHON RIGHTS CERTIFICATE AND THE MARATHON RIGHTS REPRESENTED HEREBY
 MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES SPECIFIED IN SECTION 7(e) OF
 SUCH AGREEMENT.]  1

 --------------------
  1    The portion of the legend in brackets shall be inserted only if
       applicable and shall replace the preceding sentence.


                      USX-Marathon Group Rights Certificate

                                 USX CORPORATION

 This certifies that

                                     , or registered assigns, is the
 registered owner of the number of USX-Marathon Group Rights ("Marathon
 Rights") set forth above, each of which entitles the owner thereof, subject
 to the terms, provisions and conditions of the Rights Agreement, dated as
 of September 28, 1999 (the "Rights Agreement"), between USX Corporation, a
 Delaware corporation (the "Company"), and ChaseMellon Shareholder Services,
 L.L.C., a New Jersey limited liability company (the "Rights Agent"), to
 purchase from the Company at any time prior to 5:00 P.M. (New York City
 time) on October 9, 2009 (unless extended prior thereto by the Board of
 Directors) at the office or offices of the Rights Agent designated for such
 purpose, or its successors as Rights Agent, one one-hundredth of a fully
 paid, non-assessable share of Series A Junior Preferred Stock (the
 "Preferred Stock") of the Company, at a purchase price of $110 in cash per
 one one-hundredth of a share (the "Purchase Price"), upon presentation and
 surrender of this Marathon Rights Certificate with the Form of Election to
 Purchase and related Certificate duly executed.  The number of Marathon
 Rights evidenced by this Marathon Rights Certificate (and the number of
 shares that may be purchased upon exercise thereof) set forth above, and
 the Purchase Price per share set forth above, are the number and Purchase
 Price as of October 9, 1999, based on the Preferred Stock as constituted at
 such date.  Pursuant to the Rights Agreement, the Company reserves the
 right to require prior to the occurrence of a Triggering Event (as such
 term is defined in the Rights Agreement) that, upon any exercise of
 Marathon Rights, a number of Marathon Rights be exercised so that only
 whole shares of Preferred Stock will be issued.

      Upon the occurrence of a Section 11(a)(ii) Event (as such term is
 defined in the Rights Agreement), if the Marathon Rights evidenced by this
 Marathon Rights Certificate are beneficially owned by (i) an Acquiring
 Person or an Affiliate or Associate of any such Acquiring Person (as such
 terms are defined in the Rights Agreement), (ii) a transferee of any such
 Acquiring Person, Associate or Affiliate, or (iii) under certain
 circumstances specified in the Rights Agreement, a transferee of a person
 who, after such transfer, became an Acquiring Person or an Affiliate or
 Associate of an Acquiring Person, such Marathon Rights shall become null
 and void and no holder hereof shall have any right with respect to such
 Marathon Rights from and after the occurrence of such Section 11(a)(ii)
 Event.

      As provided in the Rights Agreement, the Purchase Price and the number
 and kind of shares of Preferred Stock or other securities, which may be
 purchased upon the exercise of the Marathon Rights evidenced by this
 Marathon Rights Certificate are subject to modification and adjustment upon
 the happening of certain events, including Triggering Events.

      This Marathon Rights Certificate is subject to all of the terms,
 provisions and conditions of the Rights Agreement, which terms, provisions
 and conditions are hereby incorporated herein by reference and made a part
 hereof and to which Rights Agreement reference is hereby made for a full
 description of the rights, limitations of rights, obligations, duties and
 immunities hereunder of the Rights Agent, the Company and the holders of
 the Marathon Rights Certificates, which limitations of rights include the
 temporary suspension of the exercisability of such Marathon Rights under
 the specific circumstances set forth in the Rights Agreement.  Copies of
 the Rights Agreement are on file at the office of the Rights Agent
 designated for such purpose and are also available upon written request to
 the Rights Agent.

      This Marathon Rights Certificate, with or without other Marathon
 Rights Certificates, upon surrender at the office or offices of the Rights
 Agent designated for such purpose, may be exchanged for another Marathon
 Rights Certificate or Marathon Rights Certificates of like tenor and date
 evidencing Marathon Rights entitling the holder to purchase a like
 aggregate number of one one-hundredths of a share of Preferred Stock as the
 Marathon Rights evidenced by the Marathon Rights Certificate or Marathon
 Rights Certificates surrendered shall have entitled such holder to
 purchase.  If this Marathon Rights Certificate shall be exercised in part,
 the holder shall be entitled to receive upon surrender hereof another
 Marathon Rights Certificate or Marathon Rights Certificates for the number
 of whole Marathon Rights not exercised.

      Subject to the provisions of the Rights Agreement, the Marathon Rights
 evidenced by this Certificate may be redeemed by the Company at its option
 at a redemption price of $.01 per Marathon Right (payable in cash or stock
 or any other form of consideration deemed appropriate by the Board of
 Directors as set forth in the Rights Agreement) (the "Redemption Price") at
 any time prior to the earlier of the close of business on (i) the tenth
 Business Day following the Stock Acquisition Date (as such time period may
 be extended pursuant to the Rights Agreement), and (ii) the Final
 Expiration Date.  In addition, under certain circumstances following the
 Stock Acquisition Date, the Marathon Rights may be exchanged, in whole or
 in part, for shares of the Voting Stock, or shares of preference stock of
 the Company having essentially the same value or economic rights as such
 shares.  Immediately upon the action of the Board of Directors authorizing
 any such exchange, and without any further action or any notice, the
 Marathon Rights (other than Marathon Rights which are not subject to such
 exchange) will terminate and the Marathon Rights will only enable holders
 to receive the shares issuable upon such exchange.

      No fractional shares of Preferred Stock will be issued upon the
 exercise of any Marathon Right or Marathon Rights evidenced hereby (other
 than fractions which are integral multiples of one one-hundredth of a share
 of Preferred Stock, which may, at the election of the Company, be evidenced
 by depositary receipts), but in lieu thereof a cash payment will be made,
 as provided in the Rights Agreement. The Company, at its election, may
 require that a number of Marathon Rights be exercised so that only whole
 shares of Preferred Stock would be issued.

      No holder of this Marathon Rights Certificate shall be entitled to
 vote or receive dividends or be deemed for any purpose the holder of shares
 of Preferred Stock or of any other securities of the Company which may at
 any time be issuable on the exercise hereof, nor shall anything contained
 in the Rights Agreement or herein be construed to confer upon the holder
 hereof, as such, any of the rights of a stockholder of the Company or any
 right to vote for the election of directors or upon any matter submitted to
 stockholders at any meeting thereof, or to give or withhold consent to any
 corporate action, or to receive notice of meetings or other actions
 affecting stockholders (except as provided in the Rights Agreement), or to
 receive dividends or subscription rights, or otherwise, until the Marathon
 Right or Marathon Rights evidenced by this Rights Certificate shall have
 been exercised as provided in the Rights Agreement.

      This Marathon Rights Certificate shall not be valid or obligatory for
 any purpose until it shall have been countersigned by the Rights Agent.

      WITNESS the facsimile signature of the proper officers of the Company
 and its corporate seal.

 Dated as of _____________ , ___________


 ATTEST:                                USX CORPORATION

 ______________________________         By ___________________________
           Secretary                       Title

 Countersigned:

 CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


 By _________________________
      Authorized Signature

              [Form of Reverse Side of Marathon Rights Certificate]

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
           holder desires to transfer the Marathon Rights Certificate)

 FOR VALUE RECEIVED _____________________________ hereby sells,

 assigns and transfers unto _________________________________________

 ____________________________________________________________________
               (Please print name and address of transferee)

 this Marathon Rights Certificate, together with all right, title and
 interest therein, and does hereby irrevocably constitute and appoint
 _________, Attorney, to transfer the within Marathon Rights Certificate on
 the books of the within-named Company, with full power of substitution.

 Dated: _____________, _____

                                 ___________________________
                                 Signature

 Signature Guaranteed:


                                  Certificate

      The undersigned hereby certifies by checking the appropriate boxes
 that:

      (1)  this Marathon Rights Certificate [     ] is [     ] is not being
 sold, assigned and transferred by or on behalf of a Person who is or was an
 Acquiring Person or an Affiliate or Associate of any such Acquiring Person
 (as such terms are defined pursuant to the Rights Agreement);

      (2)  after due inquiry and to the best knowledge of the undersigned,
 it [     ] did [     ] did not acquire the Rights evidenced by this Marathon
 Rights Certificate from any Person who is, was or subsequently became an
 Acquiring Person or an Affiliate or Associate of an Acquiring Person.


 Dated:_____________ , _____        _____________________________
                                    Signature

 Signature Guaranteed:

                                     NOTICE

      The signature to the foregoing Assignment and Certificate must
 correspond to the name as written upon the face of this Marathon Rights
 Certificate in every particular, without alteration or enlargement or any
 change whatsoever.

                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                   exercise Marathon Rights represented by the
                           Marathon Rights Certificate)

 To:  USX CORPORATION:

      The undersigned hereby irrevocably elects to exercise _____ Marathon
 Rights represented by this Marathon Rights Certificate to purchase the
 shares of Preferred Stock issuable upon the exercise of the Marathon Rights
 (or such other securities of the Company or of any other person which may
 be issuable upon the exercise of the Marathon Rights) and requests that
 certificates for such shares be issued in the name of and delivered to:

 Please insert social security or other identifying number

 ___________________________________________________________________________
                         (Please print name and address)

 ___________________________________________________________________________


      If such number of Marathon Rights shall not be all the Marathon Rights
 evidenced by this Marathon Rights Certificate, a new Marathon Rights
 Certificate for the balance of such Marathon Rights shall be registered in
 the name of and delivered to:

 Please insert social security or other identifying number

 ___________________________________________________________________________
                      (Please print name and address)

 ___________________________________________________________________________


 Dated: ___________ , ____
                                        ________________________________
                                        Signature

 Signature Guaranteed:

                                   Certificate

      The undersigned hereby certifies by checking the appropriate boxes
 that:

      (1)  the Marathon Rights evidenced by this Marathon Rights Certificate
 [     ] are [     ] are not being exercised by or on behalf of a Person who
 is or was an Acquiring Person or an Affiliate or Associate of any such
 Acquiring Person (as such terms are defined pursuant to the Rights
 Agreement);

      (2)  after due inquiry and to the best knowledge of the undersigned,
 it [     ] did [     ] did not acquire the Marathon Rights evidenced by this
 Marathon Rights Certificate from any Person who is, was or became an
 Acquiring Person or an Affiliate or Associate of an Acquiring Person.


 Dated:______________ , 19              _____________________________
                                        Signature

 Signature Guaranteed:

                                     NOTICE

      The signature to the foregoing Election to Purchase and Certificate
 must correspond to the name as written upon the face of this Marathon
 Rights Certificate in every particular, without alteration or enlargement
 or any change whatsoever.

                                                                Exhibit B-2



                       [Form of Steel Rights Certificate]



 Certificate No. R-                                            Steel Rights

 NOT EXERCISABLE AFTER OCTOBER 9, 2009 UNLESS EXTENDED PRIOR THERETO BY THE
 BOARD OF DIRECTORS OR EARLIER IF REDEEMED BY THE COMPANY.  THE USX-U.S.
 STEEL GROUP RIGHTS ("STEEL RIGHTS") ARE SUBJECT TO REDEMPTION, AT THE
 OPTION OF THE COMPANY, AT $.0l PER STEEL RIGHT ON THE TERMS SET FORTH IN
 THE RIGHTS AGREEMENT.  UNDER CERTAIN CIRCUMSTANCES, STEEL RIGHTS
 BENEFICIALLY OWNED BY AN ACQUIRING PERSON (AS SUCH TERM IS DEFINED IN THE
 RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH STEEL RIGHTS MAY BECOME
 NULL AND VOID. [THE STEEL RIGHTS REPRESENTED BY THIS STEEL RIGHTS
 CERTIFICATE ARE OR WERE BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN
 ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS
 SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).  ACCORDINGLY, THIS STEEL
 RIGHTS CERTIFICATE AND THE STEEL RIGHTS REPRESENTED HEREBY MAY BECOME NULL
 AND VOID IN THE CIRCUMSTANCES SPECIFIED IN SECTION 7(e) OF SUCH AGREEMENT.] 1
- ---------------
 1   The portion of the legend in brackets shall be inserted only if
     applicable and shall replace the preceding sentence.


                     USX-U.S. Steel Group Rights Certificate

                                 USX CORPORATION

      This certifies that

                                          , or registered assigns, is the
 registered owner of the number of USX-U.S. Steel Group Rights ("Steel
 Rights") set forth above, each of which entitles the owner thereof, subject
 to the terms, provisions and conditions of the Rights Agreement, dated as
 of September 28, 1999 (the "Rights Agreement"), between USX Corporation, a
 Delaware corporation (the "Company"), and ChaseMellon Shareholder Services,
 L.L.C., a New Jersey limited liability company (the "Rights Agent"), to
 purchase from the Company at any time prior to 5:00 P.M. (New York City
 time) on October 9, 2009 (unless extended prior thereto by the Board of
 Directors), at the office or offices of the Rights Agent designated for
 such purpose, or its successors as Rights Agent, one one-hundredth of a
 fully paid, non-assessable share of Series A Junior Preferred Stock (the
 "Preferred Stock") of the Company, at a purchase price of $110 in cash per
 one one-hundredth of a share (the "Purchase Price"), upon presentation and
 surrender of this Steel Rights Certificate with the Form of Election to
 Purchase and related Certificate duly executed.  The number of Steel Rights
 evidenced by this Steel Rights Certificate (and the number of shares that
 may be purchased upon exercise thereof) set forth above, and the Purchase
 Price per share set forth above, are the number and Purchase Price as of
 October 9, 1999, based on the Preferred Stock as constituted at such date.
 Pursuant to the Rights Agreement, the Company reserves the right to require
 prior to the occurrence of a Triggering Event (as such term is defined in
 the Rights Agreement) that, upon any exercise of Steel Rights, a number of
 Steel Rights be exercised so that only whole shares of Preferred Stock will
 be issued.

      Upon the occurrence of a Section 11(a)(ii) Event (as such term is
 defined in the Rights Agreement), if the Steel Rights evidenced by this
 Steel Rights Certificate are beneficially owned by (i) an Acquiring Person
 or an Affiliate or Associate of any such Acquiring Person (as such terms
 are defined in the Rights Agreement), (ii) a transferee of any such
 Acquiring Person, Associate or Affiliate, or (iii) under certain
 circumstances specified in the Rights Agreement, a transferee of a person
 who, after such transfer, became an Acquiring Person or an Affiliate or
 Associate of an Acquiring Person, such Steel Rights shall become null and
 void and no holder hereof shall have any right with respect to such Steel
 Rights from and after the occurrence of such Section 11(a)(ii) Event.

      As provided in the Rights Agreement, the Purchase Price and the number
 and kind of shares of Preferred Stock or other securities, which may be
 purchased upon the exercise of the Steel Rights evidenced by this Steel
 Rights Certificate are subject to modification and adjustment upon the
 happening of certain events, including Triggering Events.

      This Steel Rights Certificate is subject to all of the terms,
 provisions and conditions of the Rights Agreement, which terms, provisions
 and conditions are hereby incorporated herein by reference and made a part
 hereof and to which Rights Agreement reference is hereby made for a full
 description of the rights, limitations of rights, obligations, duties and
 immunities hereunder of the Rights Agent, the Company and the holders of
 the Steel Rights Certificates, which limitations of rights include the
 temporary suspension of the exercisability of such Steel Rights under the
 specific circumstances set forth in the Rights Agreement.  Copies of the
 Rights Agreement are on file at the office of the Rights Agent designated
 for such purpose and are also available upon written request to the Rights
 Agent.

      This Steel Rights Certificate, with or without other Steel Rights
 Certificates, upon surrender at the office or offices of the Rights Agent
 designated for such purpose, may be exchanged for another Steel Rights
 Certificate or Steel Rights Certificates of like tenor and date evidencing
 Steel Rights entitling the holder to purchase a like aggregate number of
 one one-hundredths of a share of Preferred Stock as the Steel Rights
 evidenced by the Steel Rights Certificate or Steel Rights Certificates
 surrendered shall have entitled such holder to purchase.  If this Steel
 Rights Certificate shall be exercised in part, the holder shall be entitled
 to receive upon surrender hereof another Steel Rights Certificate or Steel
 Rights Certificates for the number of whole Steel Rights not exercised.

      Subject to the provisions of the Rights Agreement, the Steel Rights
 evidenced by this Certificate may be redeemed by the Company at its option
 at a redemption price of $.0l per Steel Right (payable in cash or stock or
 any other form of consideration deemed appropriate by the Board of
 Directors as set forth in the Rights Agreement) (the "Redemption Price") at
 any time prior to the earlier of the close of business on (i) the tenth
 Business Day following the Stock Acquisition Date (as such time period may
 be extended pursuant to the Rights Agreement), and (ii) the Final
 Expiration Date.  In addition, under certain circumstances following the
 Stock Acquisition Date, the Steel Rights may be exchanged, in whole or in
 part, for shares of the Voting Stock, or shares of preference stock of the
 Company having essentially the same value or economic rights as such
 shares.  Immediately upon the action of the Board of Directors authorizing
 any such exchange, and without any further action or any notice, the Steel
 Rights (other than Steel Rights which are not subject to such exchange)
 will terminate and the Steel Rights will only enable holders to receive the
 shares issuable upon such exchange.

      No fractional shares of Preferred Stock will be issued upon the
 exercise of any Steel Right or Steel Rights evidenced hereby (other than
 fractions which are integral multiples of one one-hundredth of a share of
 Preferred Stock, which may, at the election of the Company, be evidenced by
 depositary receipts), but in lieu thereof a cash payment will be made, as
 provided in the Rights Agreement.  The Company, at its election, may
 require that a number of Rights be exercised so that only whole shares of
 Preferred Stock would be issued.

      No holder of this Steel Rights Certificate shall be entitled to vote
 or receive dividends or be deemed for any purpose the holder of shares of
 Preferred Stock or of any other securities of the Company which may at any
 time be issuable on the exercise hereof, nor shall anything contained in
 the Rights Agreement or herein be construed to confer upon the holder
 hereof, as such, any of the rights of a stockholder of the Company or any
 right to vote for the election of directors or upon any matter submitted to
 stockholders at any meeting thereof, or to give or withhold consent to any
 corporate action, or to receive notice of meetings or other actions
 affecting stockholders (except as provided in the Rights Agreement), or to
 receive dividends or subscription rights, or otherwise, until the Steel
 Right or Steel Rights evidenced by this Rights Certificate shall have been
 exercised as provided in the Rights Agreement.

      This Steel Rights Certificate shall not be valid or obligatory for any
 purpose until it shall have been countersigned by the Rights Agent.

      WITNESS the facsimile signature of the proper officers of the Company
 and its corporate seal.

 Dated as of __________ , ____


 ATTEST:                       USX CORPORATION

 __________________________    By _____________________________
           Secretary              Title

 Countersigned:

 CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


 By ___________________________
      Authorized Signature

               [Form of Reverse Side of Steel Rights Certificate]

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
             holder desires to transfer the Steel Rights Certificate)

 FOR VALUE RECEIVED _____________________________ hereby sells,

 assigns and transfers unto ____________________________________________

 _______________________________________________________________________
               (Please print name and address of transferee)


 this Steel Rights Certificate, together with all right, title and interest
 therein, and does hereby irrevocably constitute and appoint ______________,
 Attorney, to transfer the within Steel Rights Certificate on the books
 of the within-named Company, with full power of substitution.

 Dated as of ___________, ____

                                   ___________________________
                                   Signature

 Signature Guaranteed:

                                Certificate

      The undersigned hereby certifies by checking the appropriate boxes
 that:

      (1)  this Steel Rights Certificate [     ] is [     ] is not being
 sold, assigned and transferred by or on behalf of a Person who is or was an
 Acquiring Person or an Affiliate or Associate of any such Acquiring Person
 (as such terms are defined pursuant to the Rights Agreement);

      (2)  after due inquiry and to the best knowledge of the undersigned,
 it [     ] did [     ] did not acquire the Rights evidenced by this Steel
 Rights Certificate from any Person who is, was or subsequently became an
 Acquiring Person or an Affiliate or Associate of an Acquiring Person.


 Dated as of ____________ , ____        _____________________________
                                        Signature

 Signature Guaranteed:

                                     NOTICE

      The signature to the foregoing Assignment and Certificate must
 correspond to the name as written upon the face of this Steel Rights
 Certificate in every particular, without alteration or enlargement or any
 change whatsoever.

                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                    exercise Steel Rights represented by the
                            Steel Rights Certificate)

 To:  USX CORPORATION:

      The undersigned hereby irrevocably elects to exercise _____ Steel
 Rights represented by this Steel Rights Certificate to purchase the shares
 of Preferred Stock issuable upon the exercise of the Steel Rights (or such
 other securities of the Company or of any other person which may be
 issuable upon the exercise of the Steel Rights) and requests that
 certificates for such shares be issued in the name  of and delivered to:

 Please insert social security
 or other identifying number

 __________________________________________________________________________
                         (Please print name and address)

 __________________________________________________________________________


      If such number of Steel Rights shall not be all the Steel Rights
 evidenced by this Steel Rights Certificate, a new Steel Rights Certificate
 for the balance of such Steel Rights shall be registered in the name of and
 delivered to:

 Please insert social security
 or other identifying number

 __________________________________________________________________________
                      (Please print name and address)

  _________________________________________________________________________

 Dated as of _________ , _____


                                        ______________________________
                                        Signature

 Signature Guaranteed:


                                   Certificate

      The undersigned hereby certifies by checking the appropriate boxes
 that:

      (1)  the Steel Rights evidenced by this Steel Rights Certificate
 [     ] are [     ] are not being exercised by or on behalf of a Person who
 is or was an Acquiring Person or an Affiliate or Associate of any such
 Acquiring Person (as such terms are defined pursuant to the Rights
 Agreement);

      (2)  after due inquiry and to the best knowledge of the undersigned,
 it [     ] did [     ] did not acquire the Steel Rights evidenced by this
 Steel Rights Certificate from any Person who is, was or became an Acquiring
 Person or an Affiliate or Associate of an Acquiring Person.


 Dated as of _____________ , ____       _____________________________
                                        Signature

 Signature Guaranteed:


                                     NOTICE

      The signature to the foregoing Election to Purchase and Certificate
 must correspond to the name as written upon the face of this Steel Rights
 Certificate in every particular, without alteration or enlargement or any
 change whatsoever.








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