<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> JUN-30-1998 <CASH> 9,867 <SECURITIES> 0 <RECEIVABLES> 67,845 <ALLOWANCES> 0 <INVENTORY> 30,382 <CURRENT-ASSETS> 13,131 <PP&E> 739,293 <DEPRECIATION> (184,619) <TOTAL-ASSETS> 1,140,046 <CURRENT-LIABILITIES> 174,782 <BONDS> 396,032 <OTHER-SE> 169,676 <COMMON> 31,220 <PREFERRED-MANDATORY> 0 <PREFERRED> 3,750 <TOTAL-LIABILITY-AND-EQUITY> 1,140,046 <SALES> 468,250 <TOTAL-REVENUES> 468,250 <CGS> 345,308 <TOTAL-COSTS> 345,308 <OTHER-EXPENSES> 90,055 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 15,298 <INCOME-PRETAX> 19,325 <INCOME-TAX> 4,966 <INCOME-CONTINUING> 14,359 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 14,359 <EPS-PRIMARY> .73 <EPS-DILUTED> .73