<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> SEP-30-1997 <CASH> 53,100 <SECURITIES> 0 <RECEIVABLES> 62,400 <ALLOWANCES> 0 <INVENTORY> 39,600 <CURRENT-ASSETS> 19,500 <PP&E> 431,600 <DEPRECIATION> 231,700 <TOTAL-ASSETS> 485,800 <CURRENT-LIABILITIES> 66,400 <BONDS> 88,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 4,200 <OTHER-SE> 270,600 <TOTAL-LIABILITY-AND-EQUITY> 485,800 <SALES> 343,000 <TOTAL-REVENUES> 343,000 <CGS> 244,800 <TOTAL-COSTS> 244,800 <OTHER-EXPENSES> (1,400) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 4,200 <INCOME-PRETAX> 42,000 <INCOME-TAX> 6,700 <INCOME-CONTINUING> 35,200 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 35,200 <EPS-PRIMARY> 2.18 <EPS-DILUTED> .0