<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE COMPANY'S AUDITED FINANCIAL STATEMENTS AS OF AND FOR THE PERIOD ENDING DECEMBER 31, 1998, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS </LEGEND> <MULTIPLIER> 1,000 <PERIOD-START> JAN-01-1998 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> DEC-31-1998 <CASH> 6,145 <SECURITIES> 0 <RECEIVABLES> 72,785 <ALLOWANCES> 0 <INVENTORY> 22,866 <CURRENT-ASSETS> 114,539 <PP&E> 328,609 <DEPRECIATION> 158,724 <TOTAL-ASSETS> 340,554 <CURRENT-LIABILITIES> 82,343 <BONDS> 0 <COMMON> 18,177 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 106,391 <TOTAL-LIABILITY-AND-EQUITY> 340,554 <SALES> 496,419 <TOTAL-REVENUES> 496,715 <CGS> 446,914 <TOTAL-COSTS> 462,273 <OTHER-EXPENSES> 2,500 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 9,588 <INCOME-PRETAX> 22,354 <INCOME-TAX> 7,599 <INCOME-CONTINUING> 14,755 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 14,755 <EPS-PRIMARY> 0.81 <EPS-DILUTED> 0.80