Exhibit 12 COMMONWEALTH ALUMINUM CORPORATION COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) (Dollars in Thousands) Six Months Ended June 30, Years Ended December 31, ---------------- ----------------------------------------------- 1996 1995 1995 1994 1993 1992 1991 ---- ---- ---- ---- ---- ---- ---- Earnings: Income from continuing operations before $5,112 $29,161 $43,073 $22,791 $(11,536) $7,977 $(42,555) income taxes........................... Fixed charges, exclusive of capitalized interest............................... $1,445 $ 2,075 $ 4,035 $ 370 $ 477 $ 460 $ 6,687 ------ ------- ------- ------- ------- ------ -------- $6,557 $31,236 $47,108 $23,161 $(11,059) $8,437 $(35,868) ------ ------- ------- ------- -------- ------ -------- ------ ------- ------- ------- -------- ------ -------- Fixed charges: Interest charged to expense............. $1,122 $ 1,849 $ 3,473 $ 62 $ 164 $ 122 $ 6,342 One-third of rent expense............... 114 126 253 308 313 338 345 Amortization of Loan Costs............. 209 100 309 Fixed charges, exclusive of capitalized interest.............................. $1,445 $2,075 $ 4,035 $ 370 $ 477 $ 460 $ 6,687 Capitalized interest.................. 172 - 50 - - - - ------ ------- ------- ------- -------- ------ -------- $1,617 $2,075 $4,085 $ 370 $ 477 $ 460 $ 6,687 ------ ------- ------- ------- -------- ------ -------- ------ ------- ------- ------- -------- ------ -------- Ratio of earnings to fixed charges....... 4.05 15.05 11.53 62.60 (23.18) 18.34 (5.36)