<ARTICLE> 5 <LEGEND> This schedule contains summary financial information extracted from form 10-Q and is qualified in its entirety by reference to such financial statements. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> JUN-30-1999 <CASH> 17,040 <SECURITIES> 0 <RECEIVABLES> 213,637 <ALLOWANCES> 0 <INVENTORY> 80,344 <CURRENT-ASSETS> 333,322 <PP&E> 2,682,084 <DEPRECIATION> 795,835 <TOTAL-ASSETS> 2,792,164 <CURRENT-LIABILITIES> 317,923 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 397 <OTHER-SE> 600,068 <TOTAL-LIABILITY-AND-EQUITY> 2,792,164 <SALES> 785,682 <TOTAL-REVENUES> 812,418 <CGS> 727,457 <TOTAL-COSTS> 777,695 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 46,706 <INCOME-PRETAX> (11,321) <INCOME-TAX> 11,400 <INCOME-CONTINUING> 79 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 3,813 <NET-INCOME> 3,892 <EPS-BASIC> .10 <EPS-DILUTED> .10