<ARTICLE> 5 <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> SEP-30-1997 <CASH> 7,379 <SECURITIES> 0 <RECEIVABLES> 85,319 <ALLOWANCES> 1,420 <INVENTORY> 74,902 <CURRENT-ASSETS> 175,632 <PP&E> 667,918 <DEPRECIATION> 291,113 <TOTAL-ASSETS> 587,814 <CURRENT-LIABILITIES> 99,769 <BONDS> 90,104 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 4,416 <OTHER-SE> 323,187 <TOTAL-LIABILITY-AND-EQUITY> 587,814 <SALES> 695,021 <TOTAL-REVENUES> 699,630 <CGS> 611,168 <TOTAL-COSTS> 611,168 <OTHER-EXPENSES> 34,643 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 4,634 <INCOME-PRETAX> 38,040 <INCOME-TAX> 14,292 <INCOME-CONTINUING> 23,748 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 23,748 <EPS-PRIMARY> 0.90<F1> <EPS-DILUTED> 0.88<F1> <FN> <F1>Earnings per share have been restated to comply with SFAS No. 128. </FN>