<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ITEM 1 OF FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> SEP-30-1998 <CASH> 81,400 <SECURITIES> 33,400 <RECEIVABLES> 395,200 <ALLOWANCES> 0 <INVENTORY> 328,600 <CURRENT-ASSETS> 877,100 <PP&E> 2,408,300 <DEPRECIATION> (1,602,100) <TOTAL-ASSETS> 1,816,400 <CURRENT-LIABILITIES> 468,000 <BONDS> 235,700 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 47,200 <OTHER-SE> 784,700 <TOTAL-LIABILITY-AND-EQUITY> 1,816,400 <SALES> 1,768,200 <TOTAL-REVENUES> 1,768,200 <CGS> 1,373,900 <TOTAL-COSTS> 1,373,900 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 13,900 <INCOME-PRETAX> 105,700 <INCOME-TAX> 35,200 <INCOME-CONTINUING> 70,500 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 70,500 <EPS-PRIMARY> 1.47 <EPS-DILUTED> 1.46