<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS 6-MOS <FISCAL-YEAR-END> DEC-31-1998 DEC-31-1998 <PERIOD-START> APR-01-1998 JAN-01-1998 <PERIOD-END> JUN-30-1998 JUN-30-1998 <CASH> 20,664 20,664 <SECURITIES> 0 0 <RECEIVABLES> 83,264 83,264 <ALLOWANCES> 414 414 <INVENTORY> 33,830 33,830 <CURRENT-ASSETS> 142,463 142,463 <PP&E> 738,005 738,005 <DEPRECIATION> 449,049 449,049 <TOTAL-ASSETS> 496,922 496,922 <CURRENT-LIABILITIES> 63,491 63,491 <BONDS> 200,000 200,000 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 0 0 <OTHER-SE> 166,933 166,933 <TOTAL-LIABILITY-AND-EQUITY> 496,922 496,922 <SALES> 146,312 299,823 <TOTAL-REVENUES> 146,312 299,823 <CGS> 141,945 293,241 <TOTAL-COSTS> 141,945 293,241 <OTHER-EXPENSES> 6,623 12,335 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 5,565 10,392 <INCOME-PRETAX> (7,821) (16,145) <INCOME-TAX> 0 0 <INCOME-CONTINUING> (7,821) (16,145) <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> (7,821) (16,145) <EPS-PRIMARY> (0.21) (0.43) <EPS-DILUTED> (0.21) (0.43)