<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> SEP-30-1996 <CASH> 3,190 <SECURITIES> 22,543 <RECEIVABLES> 151,360 <ALLOWANCES> 0 <INVENTORY> 90,903 <CURRENT-ASSETS> 11,199 <PP&E> 381,508 <DEPRECIATION> 192,891 <TOTAL-ASSETS> 559,605 <CURRENT-LIABILITIES> 189,184 <BONDS> 0 <COMMON> 56,988 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 188,126 <TOTAL-LIABILITY-AND-EQUITY> 559,605 <SALES> 467,317 <TOTAL-REVENUES> 470,175 <CGS> 188,132 <TOTAL-COSTS> 369,317 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 6,616 <INCOME-PRETAX> 94,242 <INCOME-TAX> 22,147 <INCOME-CONTINUING> 72,095 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 72,095 <EPS-PRIMARY> 1.65 <EPS-DILUTED> 0