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, ------------------------------------ 1997 1998 1999 ---- ---- ---- Net income (loss) before extraordinary item $ (3,509) $ 1,797 $ 1,496 Interest expense 11,769 12,300 14,599 Income tax expense (benefit) - (495) - Depreciation and amortization 6,775 7,112 7,726 Gain (loss) on retirement of equipment - 180 (15) Accrual of post-retirement benefit expense, net of cash paid 1,272 1,893 1,392 -------- -------- -------- EBITDA $ 16,307 $ 22,787 $ 25,198 ======== ======== ======== Restructuring expense 1,320 - - -------- -------- -------- EBITDA, excluding restructuring expense $ 17,627 $ 22,787 $ 25,198 ======== ======== ========