EXHIBIT 11 CYPRUS AMAX MINERALS COMPANY Computation of Per Share Earnings (Loss) (In millions except per share data) 1998 1997 1996 ------- ------ ------ Net Income (Loss).................................................. $ (75) $ 69 $ 77 Preferred Stock Dividends.......................................... (19) (19) (19) ------- ------ ------ Income (Loss) Applicable to Common Shares.......................... $ (94) $ 50 $ 58 ======= ====== ====== Primary: Average Common Shares Outstanding................................ 92.4 93.5 93.2 Diluted: Average Common Shares Outstanding................................ 92.4 93.5 93.2 Common Stock Equivalents-Options................................. - - .1 Conversion of Series A Preferred Stock........................... 9.6 9.6 9.6 ------- ------ ------ Diluted Average Common Shares Outstanding........................ 102.0 103.1 102.9 ======= ====== ====== Earnings (Loss) Per Share: Using Average Common Shares Outstanding.......................... $ (1.02) $ 0.54 $ 0.62 Using Diluted Average Common Shares Outstanding(1)............... $ (0.74) $ 0.67 $ 0.75 (1) Diluted earnings (loss) per share were anti-dilutive in 1998, 1997, and 1996.