<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> MAR-31-1999 <CASH> 11,500 <SECURITIES> 0 <RECEIVABLES> 58,400 <ALLOWANCES> 1,600 <INVENTORY> 18,100 <CURRENT-ASSETS> 112,700 <PP&E> 1,988,700 <DEPRECIATION> 1,287,300 <TOTAL-ASSETS> 844,000 <CURRENT-LIABILITIES> 100,100 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,000 <OTHER-SE> 335,500 <TOTAL-LIABILITY-AND-EQUITY> 844,000 <SALES> 67,900 <TOTAL-REVENUES> 68,200 <CGS> 80,400 <TOTAL-COSTS> 80,400 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 5,500 <INCOME-PRETAX> (17,300) <INCOME-TAX> (5,200) <INCOME-CONTINUING> (12,100) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (12,100) <EPS-PRIMARY> (0.12) <EPS-DILUTED> (0.12)