<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> SEP-30-1997 <CASH> 66,462 <SECURITIES> 0 <RECEIVABLES> 1,187,971 <ALLOWANCES> 42,119 <INVENTORY> 299,571 <CURRENT-ASSETS> 1,629,538 <PP&E> 4,452,690 <DEPRECIATION> 2,485,486 <TOTAL-ASSETS> 4,757,629 <CURRENT-LIABILITIES> 1,105,104 <BONDS> 1,330,919 <COMMON> 320,962 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 1,337,723 <TOTAL-LIABILITY-AND-EQUITY> 4,757,629 <SALES> 1,557,349 <TOTAL-REVENUES> 1,557,349 <CGS> 1,257,461 <TOTAL-COSTS> 1,431,887 <OTHER-EXPENSES> (8,490) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 22,079 <INCOME-PRETAX> 111,873 <INCOME-TAX> 39,715 <INCOME-CONTINUING> 72,158 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 72,158 <EPS-PRIMARY> .49 <EPS-DILUTED> .49