<ARTICLE> 5 <LEGEND> This schedule contains summary financial information extracted from the Financial Statements contained in Item 1 of Form 10-Q for the period ended June 30, 1999 and is qualified in its entirety be reference to such financial statements. Figures are rounded to the nearest 100,000 (except EPS). </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> JUN-30-1999 <CASH> 53,600 <SECURITIES> 39,100 <RECEIVABLES> 200,300 <ALLOWANCES> 0 <INVENTORY> 208,800 <CURRENT-ASSETS> 523,100 <PP&E> 1,585,800 <DEPRECIATION> (1,123,100) <TOTAL-ASSETS> 1,055,400 <CURRENT-LIABILITIES> 264,600 <BONDS> 229,800 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 45,300 <OTHER-SE> 288,000 <TOTAL-LIABILITY-AND-EQUITY> 1,055,400 <SALES> 619,600 <TOTAL-REVENUES> 619,600 <CGS> 534,200 <TOTAL-COSTS> 534,200 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 7,900 <INCOME-PRETAX> 7,300 <INCOME-TAX> 2,900 <INCOME-CONTINUING> 4,400 <DISCONTINUED> 4,400 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 8,800 <EPS-BASIC> 0.19 <EPS-DILUTED> 0.19