<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1995 <PERIOD-START> JAN-01-1996 <PERIOD-END> SEP-30-1996 <CASH> 34,967 <SECURITIES> 0 <RECEIVABLES> 50,790 <ALLOWANCES> 0 <INVENTORY> 36,661 <CURRENT-ASSETS> 135,543 <PP&E> 305,225 <DEPRECIATION> 133,036 <TOTAL-ASSETS> 331,944 <CURRENT-LIABILITIES> 43,627 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 48,918 <OTHER-SE> 171,515 <TOTAL-LIABILITY-AND-EQUITY> 331,944 <SALES> 213,385 <TOTAL-REVENUES> 213,385 <CGS> 133,635 <TOTAL-COSTS> 189,543 <OTHER-EXPENSES> 413 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 550 <INCOME-PRETAX> 24,051 <INCOME-TAX> 8,778 <INCOME-CONTINUING> 15,273 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 15,273 <EPS-PRIMARY> .38 <EPS-DILUTED> .38