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Martin Marietta Materials


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P.O. Box 30013                                           News Release
Raleigh, North Carolina 27622
Telephone:    (919) 781-4550

FOR IMMEDIATE RELEASE                    Contact:        Janice K. Henry
                                                         Vice President,
                                                         Chief Financial Officer
                                                         and Treasurer
                                                         (919) 783-4658



                            MARTIN MARIETTA MATERIALS
                            ANNOUNCES RECORD QUARTER

RALEIGH,  North Carolina  (October 21, 1996) - Martin Marietta  Materials,  Inc.
(NYSE:MLM)  today  reported  financial  results  for the third  quarter and nine
months ended  September 30, 1996.  Sales for the quarter  increased 5% to $201.5
million from 1995 third  quarter sales of $191.1  million.  Net earnings for the
quarter  increased  17% to $27.5  million,  or $0.60 per share,  from 1995 third
quarter net earnings of $23.4 million, or $0.51 per share.
         Sales for the first nine months of 1996  increased 8% to $538.5 million
from $497.0 million for the year-earlier period. For the nine-month period ended
September 30, 1996, net earnings  increased 14% to $58.6  million,  or $1.27 per
share, from net earnings for the first nine months of 1995 of $51.6 million,  or
$1.12 per share.
         The Aggregates  division's sales increased 6% to $169.5 million for the
third  quarter,  compared with the  year-earlier  period,  while the  division's
earnings from operations for the quarter were $40.5 million,  an increase of 18%
from the prior-year  period.  Unusually wet weather conditions in the Southeast,
primarily as a result of Hurricane Fran,  adversely  affected both shipments and
production and resulted in the temporary shutdown of certain locations. Sales of
$440.8 million and operating earnings of $83.7 million for the nine months ended
September 30, 1996, exceeded the prior-year period by 9%.
         Magnesia  Specialties'  third  quarter  sales  of  $32.0  million  were
slightly  above third  quarter  sales in 1995,  while the  division's  operating
earnings of $2.5 million were 3% below the prior-year  period as a result of the
impact of an explosion and fire in an electrical  substation,  which occurred at
the Woodville,  Ohio, lime plant during the second  quarter.  For the nine-month
period, sales were $97.7 million and earnings from operations were $7.8 million,
an increase of 4% and 33%, respectively, over the prior-year period.


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         Commenting  on the results,  Stephen P.  Zelnak,  Jr.,  Vice  Chairman,
President and Chief  Executive  Officer,  said,  "We continue to experience  the
benefits from our  acquisitions  as well as from  continued  growth in the areas
where we do business. Weather has had a negative impact on shipments and cost of
operations  throughout the year.  However,  despite severe cold during the first
quarter and the effects of Hurricane Fran on our North Carolina quarries and the
subsequent  wet weather  conditions in the third  quarter,  shipments  reached a
record level for the quarter and are up 7.5% for the year to date.
         "At our Magnesia Specialties division, we continue to see growth in the
MagChem(R) product line as a result of our emphasis on increasing sales in areas
with higher margins.  Management expects the division to realize record sales in
this  product  area for 1996  and  continued  improvement  in  1997.  The  costs
associated  with the  explosion  at our lime  plant  affected  second  and third
quarter  earnings;  however,  repairs were  completed in the third quarter and a
claim has been filed under our business interruption insurance policy."
         Martin  Marietta  Materials,  Inc.,  is  the  nation's  second  largest
producer of  construction  aggregates and a leading  producer of  magnesia-based
chemical and refractory products used in a wide variety of industries.



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                         MARTIN MARIETTA MATERIALS, INC.
                         Unaudited Statement of Earnings
                     (In millions, except per share amounts)

                                            Three Months Ended                         Nine Months Ended
                                               September 30,                             September 30,
                                            -------------------                       ----------------
                                                                                           
                                        1996                   1995                 1996                1995
                                        ----                   ----                 ----                ----
Net sales                              $  201.5              $ 191.1              $  538.5             $  497.0
Cost of sales                             142.9                139.3                 400.8                369.9
                                       --------              -------              --------             --------
     Gross profit                          58.6                 51.8                 137.7                127.1
Selling, general and
     administrative expense                15.1                 14.3                  44.8                 43.1
Research and development                    0.5                  0.5                   1.4                  1.4
                                       --------              -------              --------             --------
     Earnings from operations              43.0                 37.0                  91.5                82.6

Interest expense                           (2.3)                (2.5)                 (8.0)                (7.0)
Other income and
     expenses, net                          0.9                  1.8                   5.2                  4.4
                                       --------              -------              --------             --------
     Earnings before taxes on
        income                             41.6                 36.3                  88.7                 80.0

Taxes on income                            14.1                 12.9                  30.1                 28.4
                                       --------              -------              --------             --------

     Net earnings                      $   27.5              $  23.4              $   58.6             $   51.6
                                       ========              =======              ========             ========

Net earnings per common share
                                       $  0.60               $  0.51              $   1.27             $   1.12
                                       =======               =======              ========             ========

Average number of shares
     outstanding                           46.1                 46.1                  46.1                 46.1




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                         MARTIN MARIETTA MATERIALS, INC.
                         Unaudited Financial Highlights
                                  (In millions)


                                                 Three Months Ended                      Nine Months Ended
                                                    September 30,                          September 30,
                                                 -------------------                    ----------------
                                                                                             
                                               1996               1995               1996                1995
                                               ----               ----               ----                ----

Net sales:
     Aggregates                              $   169.5           $  159.2          $    440.8         $    403.1
     Magnesia Specialties                         32.0               31.9                97.7               93.9
                                             ---------           --------          ----------         ----------
          Total                              $   201.5           $  191.1          $    538.5         $    497.0
                                             =========           ========          ==========         ==========

Gross profit:
     Aggregates                              $    51.4           $   44.0          $    115.8         $    105.6
     Magnesia Specialties                          7.2                7.8                21.9               21.5
                                             ---------           --------          ----------         ----------
          Total                              $    58.6           $   51.8          $    137.7         $    127.1
                                             =========           ========          ==========         ==========

Earnings from operations:
     Aggregates                              $    40.5           $   34.4          $     83.7         $     76.8
     Magnesia Specialties                          2.5                2.6                 7.8                5.8
                                             ---------           --------          ----------         ----------
          Total                              $    43.0           $   37.0          $     91.5         $     82.6
                                             =========           ========          ==========         ==========




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                         MARTIN MARIETTA MATERIALS, INC.
                               Balance Sheet Data
                                  (In millions)

                                                                     September 30,               December 31,
                                                                         1996                        1995
                                                                     -------------               --------
                                                                      (Unaudited)
                                                                                          
ASSETS

     Cash                                                               $      2.4              $       -
     Accounts receivable, net                                                133.6                    94.8
     Affiliates receivable                                                     6.1                    89.7
     Inventories                                                             113.1                   113.4
     Other current assets                                                     14.0                    16.5
     Property, plant & equipment, net                                        396.5                   392.2
     Other noncurrent assets                                                  22.9                    21.6
     Intangible assets                                                        62.0                    61.2
                                                                        ----------              ----------

          Total assets                                                  $    750.6              $    789.4
                                                                        ==========              ==========

LIABILITIES & SHAREHOLDERS' EQUITY

     Current liabilities                                                $     86.2              $    173.3
     Long-term debt (excluding
         current maturities)                                                 124.8                   125.0
     Pension, postretirement &
         postemployment benefits                                              52.1                    47.5
     Other noncurrent liabilities                                             21.0                    20.1
     Shareholders' equity                                                    466.5                   423.5
                                                                        ----------              ----------

          Total liabilities and shareholders' equity                    $    750.6              $    789.4
                                                                        ==========              ==========