<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> MAR-31-1998 <CASH> 8,185 <SECURITIES> 22,319 <RECEIVABLES> 88,039 <ALLOWANCES> 0 <INVENTORY> 96,732 <CURRENT-ASSETS> 225,189 <PP&E> 319,409 <DEPRECIATION> (39,643) <TOTAL-ASSETS> 743,466 <CURRENT-LIABILITIES> 122,832 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 428 <OTHER-SE> 248,536 <TOTAL-LIABILITY-AND-EQUITY> 743,466 <SALES> 274,705 <TOTAL-REVENUES> 274,705 <CGS> 216,194 <TOTAL-COSTS> 251,856 <OTHER-EXPENSES> 612 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 5,678 <INCOME-PRETAX> 16,559 <INCOME-TAX> 7,049 <INCOME-CONTINUING> 9,510 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 9,510 <EPS-PRIMARY> 0.25 <EPS-DILUTED> 0.22