1 EXHIBIT 12.01 MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES for the Year Ended December 31, 1998 (Amounts in Thousands) EARNINGS: Earnings before income taxes $ 174,142 Earnings of less than 50%-owned associated companies, net (684) Interest expense 23,759 Portion of rents representative of an interest factor 2,424 --------- Adjusted Earnings and Fixed Charges $ 199,641 ========= FIXED CHARGES: Interest Expense $ 23,759 Capitalized interest 359 Portion of rents representative of an interest factor 2,424 --------- Total Fixed Charges $ 26,542 ========= Ratio of Earnings to Fixed Charges 7.52 ========= 31