EXHIBIT 12 Pro Forma Pro Forma Six Six Six months Year months months ended ended ended ended Year ended December 31, June 30, 31-Dec June 30, June 30, --------------------------------------- 1998 1997 1998 1997 1997 1996 1995 1994 1993 ---- ---- ---- ---- ---- ---- ---- ---- ---- Earnings: Income (loss) before taxes on income $ (17.1) $ 11.2 $ (37.7) $ 6.0 $ 26.1 $ 7.9 $(20.0) $ 10.8 $(58.8) Minority interest (0.1) 0.3 (0.1) 0.2 0.3 0.1 0.1 - - Fixed charges (25.5) (50.8) (16.4) 8.6 (17.0) (20.4) (16.9) (18.2) (17.1) ------- ------- ------- ------- ------ ----- ------ ------ ------ Earnings as adjusted (A) 8.5 61.7 (21.2) 14.4 42.8 28.2 (3.2) 29.0 (41.5) Fixed charges Interest expense net 21.5 42.8 12.4 4.1 8.5 10.7 8.8 10.0 9.9 Rents under leases representative of an interest factor 4.0 8.0 4.0 4.1 8.0 8.0 5.9 6.3 5.8 Interest income - - - 0.4 0.5 1.7 2.2 1.9 1.4 Capitalized interest 0.4 0.9 0.4 0.4 0.9 1.2 1.6 1.0 1.0 ------- ------- ------- ------- ------ ----- ------ ------ ------ Fixed charges as adjusted (B) $ 25.9 $ 51.7 $ 16.8 $ 9.8 $ 17.9 $21.6 $ 18.5 $ 19.2 $ 18.1 Preferred stock dividends 3.0 9.2 1.5 - - - - - - ------- ------- ------- ------- ------ ----- ------ ------ ------ Fixed charges including preferred stock dividends (C) $ 28.5 $ 60.9 18.3 n/a n/a n/a n/a n/a n/a Ratio of earnings to fixed charges (A) divided by (B) 0.3x 1.2x 1.6x 2.4x 1.3x - 1.5x - Deficiency of earnings to fixed charges $ 17.4 $ - $ 38.0 $ - $ - $ - $ 21.7 $ - $ 59.6 Ratio of earnings to combined fixed charges and preferred stock dividends (A) divided by (C) 0.3x 1.0 n/a n/a n/a n/a n/a n/a Deficiency of earnings to combined fixed charges and preferred stock $ 20.4 $ - 39.5 n/a n/a n/a n/a n/a n/a