1984 STOCK OPTION PLAN
                        FOR KEY EMPLOYEES
                (With Stock Appreciation Rights)


                    Adopted:  April 26, 1984
                              As Amended
                              October 23, 1986
                              January 22, 1987
                              April 23, 1987
                              July 23, 1987
                              April 25, 1991























                     [MARTIN MARIETTA LOGO]

                THIS DOCUMENT CONSTITUTES PART OF
                A PROSPECTUS COVERING SECURITIES
                 THAT HAVE BEEN REGISTERED UNDER
                   THE SECURITIES ACT OF 1933
                          APRIL 2, 1993




                    MARTIN MARIETTA CORPORATION
            1984 STOCK OPTION PLAN FOR KEY EMPLOYEES


1.   Purpose

     The purpose of the Plan is to attract and retain the services
of key employees in positions which contribute materially to the
successful operation of the business of the Corporation and to
grant such employees an attractive opportunity to acquire a
proprietary interest in the business enterprise and thereby provide
them with an added incentive to increase the earnings of the
Corporation.

     It is intended that this purpose will be effected through the
granting of stock options and stock appreciation rights, as
provided herein.

2.   Definitions

     As used in the Plan, "Corporation" means Martin Marietta
Corporation and its subsidiaries. "Subsidiary" means a corporation
of which Martin Marietta Corporation owns, directly or indirectly,
stock having at least 50% of the power to vote, under normal
circumstances, in the election of directors. "Board of Directors"
means the Board of Directors of Martin Marietta Corporation.  The
"Committee" means the Stock Option Committee. "Employee" means
officers and other key employees of the Corporation but excludes
directors who are not also officers or employees of the
Corporation. An "option' means an option to purchase shares of
Martin Marietta Common Stock. A "right" means a stock appreciation
right. "Grant" means the award of both a stock option and a stock
appreciation right. The "grant value of the right" means the fair
market value of a share of stock on the date a right is granted, as
that value may be adjusted pursuant to Section 7(a)(v) of the Plan.
"Normal retirement" means retirement on or after the normal
retirement date, as defined in subparagraph (a), Paragraph 1 of
Article IV of the Martin Marietta Retirement Income Plan for
Salaried Employees. "Early retirement" shall have the meaning set
forth in Paragraph 2 of Article IV of the Martin Marietta
Retirement Income Plan for Salaried Employees.

3.   Effective Date

     The Plan shall become effective upon the approval by the
stockholders.

4.   Eligible Employees

     Options and rights may be granted only to exempt salaried
employees of the Corporation. However, not more than 10% of the
total number of shares available under the Plan shall be subject to
option to any one employee, and no individual who owns stock
possessing 5% or more of the combined voting power of all classes




of stock of the Corporation shall be eligible for a grant of
options and rights under the Plan.

5.   Terms of Stock Options and Stock Appreciation Rights

     The terms of each option and right granted under the Plan
shall be determined by the Board of Directors, consistent with the
provisions of the Plan, including the following:

     (a)  Each grant of options and rights may be exercised in
     whole or in part subject to the provisions of the Plan,
     provided that no option or right shall be exercisable prior to
     one year or after ten years from the date of grant.  Except as
     provided in Section 6(c), each grant shall be divided into
     three approximately equal installments of 100-share and 100-
     right increments.  The first installment shall be exercisable
     one year after the date of grant and each succeeding
     installment shall be exercisable one year from the date the
     prior installment became exercisable.  To the extent that the
     installments are not equal in number, the larger installment
     or installments shall be exercisable in the last or second and
     last years. After the privilege to exercise an installment
     accrues, the options and rights included in that installment
     may, except as provided in Section 8, be exercised at any time
     prior to the expiration of ten years from date of grant.

     (b)  Each optionee must remain in the employ of the
     Corporation for at least one year from the date the option and
     right are granted before any part of the grant can be
     exercised.

     (c)  An option or right shall not be assignable or
     transferable by the employee to whom granted otherwise than by
     will or by the laws of descent and distribution and shall be
     exercisable during the participant's lifetime only by the
     participant or in the event of disability by the legal
     guardian or representative.

     (d)  The grant will be evidenced by a certificate that will
     specify the number of shares and rights to which it pertains.

6.   Stock Options

     (a)  Shares of Stock Subject to the Plan

     The shares that may be issued under the Plan shall not exceed
     5,475,000 shares of the Common Stock, $1.00 par value, of the
     Corporation except as provided in Paragraph (c) below. They
     may consist in whole or in part of unissued or treasury
     shares. Such treasury shares may be acquired to satisfy the
     requirements of the Plan. If for any reason shares as to which
     an option has been granted cease to be subject to purchase,
     then such shares shall again be available for option under the
     Plan.

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     (b)  Grant of Options

        (i)    The purchase price of the stock subject to option
     shall not be less than 100% of the fair market value of the
     stock on the date the option is granted, except as otherwise
     provided in Section 6(c)(i) below.

       (ii)    Except as provided in Paragraph 10, the purchase
     price of the stock subject to option shall be paid in cash or,
     with the approval of the Board of Directors or the Committee,
     may be paid in full or part by the tender of Martin Marietta
     Corporation Common Stock owned by the optionee.  Common Stock
     delivered in payment of the purchase price shall be valued at
     the fair market value and any portion of the purchase price
     not satisfied by the tender of Common Stock shall be paid in
     full in cash upon such exercise.  No fractional shares shall
     be is sued. As soon as possible following receipt of payment
     to the Corporation, the optionee (or other person entitled to
     exercise the option) shall receive a certificate or
     certificates for such shares, subject to the provisions of
     Section 6(d).

      (iii)    No person shall have the rights of a stockholder
     with respect to shares subject to an option until the date the
     option is exercised.

     (c)  Adjustment Upon Changes in Stock

        (i)    If there shall be any change affecting the stock
     subject to the Plan or to any option granted thereunder
     through merger, consolidation, reorganization,
     recapitalization, stock dividend, stock split or combination,
     or otherwise, the Board of Directors shall make appropriate
     proportional adjustments in the aggregate number of shares
     subject to the Plan and the number of shares and the price per
     share subject to outstanding options and may assume old
     options or substitute new options for old options, regardless
     of whether the option price of any such option resulting from
     the proportional adjustment is less than the then fair market
     value of the subject shares.

       (ii)    In the event of a proposed dissolution or
     liquidation of Martin Marietta Corporation, each option
     granted under the Plan shall terminate as of a date, which in
     no event shall be later than the expiration date specified in
     the option, to be fixed by the Board of Directors, provided
     that not less than 30 days' written notice of the date so
     fixed shall be given to each optionee (or other person
     entitled to exercise the option) and each optionee (or other
     person entitled to exercise the option) shall have the right
     (provided that by the date of exercise of the option the
     optionee has remained in the employ of the Corporation for at
     least one year from the date the option was granted) during
     the period of 30 days preceding such termination to exercise

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     the option as to all or any part of the shares covered
     thereby, including shares as to which such option would not
     otherwise then be exercisable.

      (iii)    In the event of a Change of Control, each optionee
     (or other person entitled to exercise the option) shall have
     the right (provided that by the date of exercise of the option
     the optionee has remained in the employ of the Corporation for
     at least six months from the date the option was granted)
     during a period of 60 days following a Change of Control to
     exercise the option as to all or any part of the shares
     covered thereby, including shares as to which such option
     would not otherwise then be exercisable or to have the
     Corporation, upon request of the optionee (or other person
     entitled to exercise the option), purchase all such options at
     a cash purchase price equal to the excess of the fair market
     value per share over the option price multiplied by the number
     of all such option shares. For purposes of this Section and
     Section 7(a)(ii) below, the term "fair market value" where a
     Change of Control has occurred shall mean the greater of (a)
     the highest price per share paid as a result of any offer
     which is in effect during the period beginning on the
     ninetieth day prior to the date on which such option is
     exercised and ending on the date on which such option is
     exercised or the fixed or formula price specified in a
     transaction agreement if such price is determinable as of the
     date of exercise of the option or, in the case of a 25%
     acquisition, the highest price per share shown on the
     Statement on Schedule 13D or any Amendment thereto filed by
     the holder of 25% or more of the Corporation's voting
     securities, and (b) the highest closing price per share of the
     Corporation's Common Stock on the New York Stock Exchange
     Composite Tape during the period beginning on the ninetieth
     day prior to the date on which the option is exercised and
     ending on the date on which such option is exercised. In the
     event the price for Martin Marietta Common Stock in a
     transaction that results in a Change of Control cannot be
     determined in accordance with the provisions of this
     Section 6(c)(iii), fair market value shall be determined by
     the Board of Directors.  The value thus determined shall be
     subject to adjustments as provided in Section 6(c)(i) above.
     For purposes of this paragraph, the term "Change of Control"
     shall mean the following:

          (A)  A tender offer or exchange offer is made whereby the
          effect of such offer is to take over and control the
          affairs of the Corporation and such offer is consummated
          for the ownership of securities of the Corporation
          representing 25% or more of the combined voting powers of
          the Corporation's then outstanding voting securities.

          (B)  The Corporation is merged or consolidated with
          another corporation and, as a result of such merger or
          consolidation, less than 75% of the outstanding voting

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          securities of the surviving or resulting corporation
          shall then be owned in the aggregate by the former
          stockholders of the Corporation, other than affiliates
          within the meaning of the Securities Exchange Act of 1934
          (the "Exchange Act") or any party to such merger or
          consolidation.

          (C)  The Corporation transfers substantially all of its
          assets to another corporation or entity which is not a
          wholly owned subsidiary of the Corporation.

          (D)  Any "person" (as such term is used in
          Sections 3(a)(9) and 13(d)(3) of the Exchange Act) is or
          becomes the beneficial owner, directly or indirectly, of
          securities of the Corporation representing 25% or more of
          the combined voting power of the Corporation's then
          outstanding securities, and the effect of such ownership
          is to take over and control the affairs of the
          Corporation.

          (E)  During any period of two consecutive years,
          individuals who at the beginning of such period
          constitute the Board of Directors of the Corporation
          cease for any reason to constitute at least a majority
          thereof unless the election, or the nomination for
          election by the Corporation's stockholders, of each new
          director was approved by a vote of at least two thirds of
          the directors then still in office who were directors at
          the beginning of the period.  For purposes of the Plan,
          ownership of voting securities shall take into account
          and include ownership as determined by applying the
          provisions of Rule 13-3(d)(l)(i) of the Exchange Act (as
          then in effect).

     (d)  Limitations on Transfer of Shares

          The Corporation shall not be required, upon the exercise
          of any option, to issue or deliver any shares of stock
          prior to (a) the authorization of such shares for listing
          on any stock exchange on which Martin Marietta
          Corporation's Common Stock may then be listed and (b)
          such registration or other qualification of such shares
          under applicable securities laws as the Corporation shall
          determine to be necessary or advisable.  If shares
          issuable on the exercise of options have not been
          registered under the Securities Act of 1933 ("the Act")
          or there is not available a current Prospectus meeting
          the requirements of the Act with respect thereto,
          optionees may be required to represent at the time of
          each exercise of options that the shares purchased are
          being acquired for investment and not with a view to
          distribution; and the Corporation may place a legend on
          the stock certificate to indicate that the stock may not
          be sold or otherwise disposed of except in accordance

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          with the Act, as amended, and the rules and regulations
          promulgated thereunder.

7.   Stock Appreciation Rights

     (a)  Grant of Rights

        (i)    Stock appreciation rights shall be granted only to
     recipients of stock options and each right will relate to a
     specific stock option granted under the Plan.  The number of
     rights granted shall equal the number of shares granted under
     the stock option provisions of the Plan and shall be granted
     concurrently with the grant of the related stock option.

       (ii)    For each right granted on or after July 23, 1987,
     the amount of the cash payment to which an optionee shall be
     entitled for each right shall be equal to a percent of the
     excess, if any, of the fair market value of a share of Martin
     Marietta Common Stock on the exercise date over the grant
     value of the right.  Such percentage shall be determined by
     the Stock Option Committee or its delegatee in a manner which
     shall be intended to approximate the tax obligation arising
     from the exercise of such option and shall be adjusted
     periodically pursuant to paragraph 7(a)(iii).

      (iii)    The percentage referred to in paragraph 7(a)(ii)
     shall be increased or decreased from time to time by the
     Committee or its delegatee to reflect significant changes in
     income tax laws. At the time the Committee or its delegatee
     determines that an increase or decrease is warranted, it shall
     set a new percentage and shall set the effective date on which
     such new percentage will apply in determining the amount of
     the cash payment for each right which was granted on or after
     July 23, 1987, and is exercised after the effective date of
     such percentage change.

       (iv)    An optionee (or other person entitled to exercise
     the option) who, in the event of a Change of Control, elects
     either to exercise or to have the Corporation purchase his
     options, shall receive a cash payment for the rights related
     to such option equal to a percentage, determined in accordance
     with paragraphs 7(a)(ii) and 7(a)(iii), of the excess of the
     fair market value per share over the option price, such fair
     market value to be determined in accordance with the
     applicable provisions of Section 6(c)(iii), multiplied by the
     number of option shares.

        (v)    Should there be a change affecting the stock subject
     to the Plan as referred to in Section 6(c), the number of
     rights shall be adjusted to equal the number of related stock
     option shares upon completion of the adjustment required by
     the change. The grant value of a right shall also be adjusted
     to equal the option price of the related stock option
     following the adjustment required by the change.

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     (b)  Exercise of Rights

        (i)    Subject to the limitations set forth herein, an
     optionee shall be entitled to receive payment in cash for
     rights granted under this Plan. The cash payment will be in
     consideration of services performed for the Corporation or for
     its benefit by the optionee.

       (ii)    Nothing contained herein shall be construed to
     require the simultaneous exercise of options and the related
     rights where such options or rights are exercised after May 1,
     1991.

8.   Death, Termination of Employment, or Retirement

     (a)  If an optionee dies while employed by the Corporation or
     within three months after termination of employment, options
     and rights may be exercised by the persons referred to in
     Section 5(c) only within one year from the date of death.  In
     cases of normal retirement or of disability, options and
     rights may be exercised within three years from the date of
     such retirement or disability.  In cases of termination of an
     optionee's employment by the Corporation, with or without
     cause, or early retirement (except as provided in
     Section 8(b)), the options and rights may be exercised by the
     optionee only within three months from the date of termination
     of employment.  Nothing contained in the Plan or in any option
     or right granted hereunder shall confer upon any optionee any
     right of continued employment by the Corporation nor limit in
     any way the right of the Corporation to terminate the
     participant's employment at any time.

     (b)  Except as otherwise provided in this paragraph, a grant
     may be exercised pursuant to this Section 8 only to the extent
     the optionee was entitled to exercise the options and rights
     at the time of termination of employment or as provided in
     Section 6(c) and, in any event, may not be exercised after the
     expiration of ten years from the date of grant.  In the event
     an optionee ceases to be an employee, the options and rights
     which are not exercisable at the time shall terminate.  In
     cases of death or disability while employed by the Corporation
     or normal retirement where an optionee has applied for and is
     receiving benefits pursuant to a retirement plan for Martin
     Marietta salaried employees, all outstanding options and
     rights shall become exercisable upon such death, disability,
     or normal retirement and may be exercised pursuant to this
     Section 8 or as provided in Section 6(c).  In cases of early
     retirement where an optionee has applied for and is receiving
     benefits pursuant to a retirement plan for Martin Marietta
     salaried employees, all outstanding options and rights shall
     become exercisable upon such early retirement at the
     discretion of the Board of Directors, the Committee, or the
     Chief Executive Officer and, to the extent exercisable, may be
     exercised within three years from the date of such early

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     retirement or as provided in Section 6(c). Options and rights
     may not be exercised less than six months or after the
     expiration of ten years from the date of grant thereof.

9.   Leave of Absence

     For the purpose of the Plan, an employee on leave of absence
will be considered as still in the employ of the Corporation unless
otherwise provided in an agreement between the employee and the
Corporation.

10.  Deferred Payments for Stock

     To the extent permitted by applicable law, the Board of
Directors or the Committee may agree to accept as full or partial
payment of the purchase price of stock issued upon exercise of
options a promissory note of the optionee evidencing his obligation
to make future cash payment thereof.  Promissory notes shall be
payable as determined by the Board of Directors or the Committee
(but in no event later than five years after the date thereof),
shall be secured by a pledge of the shares purchased, and shall
bear interest at a rate fixed by the Board of Directors or the
Committee.

11.  Administration

     (a)  Stock Option Committee

        (i)    The Stock Option Committee shall consist of three or
     more of those members of the Board of Directors who are not
     eligible to receive options and rights under the Plan.  The
     members of the Committee shall be designated by the Board of
     Directors.  A majority of the members of the Committee shall
     constitute a quorum.  The vote of a majority of a quorum shall
     constitute action by the Committee.

       (ii)    The Committee shall determine the employees who will
     participate in the Plan, the number of shares and rights
     subject to each grant, and shall have the authority to adopt
     rules and regulations for administering the Plan.

      (iii)    As and to the extent authorized by the Board of
     Directors or the By-Laws, the Committee may exercise the
     powers and authority related to the Plan which are vested in
     the Board of Directors.  The Committee may delegate to the
     officers or employees of the Corporation the authority to
     execute and deliver documents and to take such other steps
     deemed necessary or convenient for the efficient
     administration of the Plan.

     (b)  Finality of Determinations

          The Board of Directors shall have the power to interpret
          the Plan.  All interpretations, determinations, and

                                  8



          actions by the Board of Directors or by the Committee, to
          the extent authorized by the Plan, the Board of Directors
          or the By-Laws shall be final, conclusive, and binding
          upon all parties.

12.  Amendment and Termination

     The Board of Directors shall have the power, in its
discretion, to amend, suspend, or terminate the Plan or options and
rights granted under the Plan at any time.  It shall not, however,
without further action by the stockholders, have the power to (a)
change the class of employees eligible to receive options under the
Plan, (b) provide for options or rights exercisable more than ten
years after the date granted, or (c) extend the expiration date of
the Plan; nor shall it have the power (except as otherwise provided
in the Plan) to (d) increase the number of shares subject to the
Plan or (e) reduce the option price below the fair market value of
the stock at the time the option was granted.  No amendment,
suspension, or termination of the Plan or options and rights
granted under the Plan shall, except with the consent of the
optionee, adversely affect an option or right previously granted
except as set forth in paragraphs 7(a)(ii) and 7(a)(iii).

13.  Duration

     The Plan shall remain in effect until all options and rights
granted under the Plan have been exercised or terminated under the
terms of the Plan, provided that options and rights under the Plan
must be granted within ten years from the effective date of the
Plan.


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                     [MARTIN MARIETTA LOGO]













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