Exhibit 12.1 UNITED STATES STEEL CORPORATION COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS (Unaudited) --------------------------------------------------------- (Dollars in millions) Six Months Ended Year Ended December 31 June 30 --------------------------------- 2002 2001 2001 2000 1999 1998 1997 ---- ---- ---- ---- ---- ---- ---- Portion of rentals representing interest $21 $21 $ 45 $ 48 $ 46 $ 52 $ 47 Capitalized interest - 1 1 3 6 6 7 Other interest and fixed charges 68 35 153 115 75 47 91 Pretax earnings which would be required to cover preferred stock dividend requirements of parent - 6 12 12 14 15 20 ---- ---- ---- ---- ---- ---- ---- Combined fixed charges and preferred stock dividends (A) $89 $63 $211 $178 $141 $120 $165 ==== ==== ==== ==== ==== ==== ==== Earnings-pretax income with applicable adjustments (B) $23 $(139) $(387) $187 $295 $618 $781 ==== ==== ==== ==== ==== ==== ==== Ratio of (B) to (A) (a) (b) (c) 1.05 2.10 5.15 4.72 ==== ==== ==== ==== ==== ==== ==== (a) Earnings did not cover combined fixed charges and preferred stock dividends by $66 million. (b) Earnings did not cover combined fixed charges and preferred stock dividends by $202 million. (c) Earnings did not cover combined fixed charges and preferred stock dividends by $598 million.