Exhibit 13 SHEFFIELD STEEL CORPORATION AND SUBSIDIARIES Computation of Earnings Before Interest, Taxes, Depreciation, Amortization, and Non-cash Post-retirement Benefit Expense (EBITDA) (In thousands) Years Ended April 30, ------------------------------------ 1995 1996 1997 ---- ---- ---- Net income (loss) $ 1,825 (3,091) (3,509) Interest expense 8,049 11,733 11,769 Income tax expense 197 - - Depreciation and amortization 5,930 6,567 6,775 Accrual of post-retirement benefit expense, net of cash paid 2,523 1,747 1,272 ------- ------- ------ EBITDA $ 18,524 $ 16,956 $ 16,307 ======= ======= ====== Restructuring expense - - 1,320 ------- ------- ------ EBITDA, excluding restructuring expense $ 18,524 $ 16,956 $ 17,627 ======= ======= ======