EXHIBIT 11 To Cyprus Amax Minerals Company's Quarterly Report on Form 10-Q For the Quarter Ended September 30, 1997 -18- EXHIBIT 11 CYPRUS AMAX MINERALS COMPANY & SUBSIDIARIES ------------- COMPUTATION OF PER SHARE EARNINGS (IN MILLIONS EXCEPT PER SHARE DATA) Three Months Nine Months Ended September 30 Ended September 30 -------------------- -------------------- 1997 1996 1997 1996 -------- -------- -------- -------- Net Income $ 44 $ 14 $ 167 $ 129 Preferred Stock Dividends (5) (5) (14) (14) -------- -------- -------- -------- Income Applicable to Common Shares $ 39 $ 9 $ 153 $ 115 ======== ======== ======== ======== Primary: Average Common Shares Outstanding 93.4 93.2 93.4 93.2 Fully Diluted: Average Common Shares Outstanding 93.4 93.2 93.4 93.2 Common Stock Equivalents - Options/(1)/ .1 .1 .1 .1 Conversion of Series A Preferred Stock 9.6 9.6 9.6 9.6 -------- -------- -------- -------- Fully Diluted Average Common Shares Outstanding 103.1 102.9 103.1 102.9 ======== ======== ======== ======== Primary Earnings per Common Share .42 .10 1.63 1.23 Fully Diluted Earnings per Share .43/(2)/ .13/(2)/ 1.61 1.25/(2)/ /(1)/ Common stock equivalents are not included in primary earnings per share because they are less than three percent dilutive. /(2)/ Fully diluted earnings per share were anti-dilutive. -19-