<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> MAR-31-1998 <CASH> 1,208,000 <SECURITIES> 0 <RECEIVABLES> 17,927,000 <ALLOWANCES> (340,000) <INVENTORY> 17,693,000 <CURRENT-ASSETS> 38,787,000 <PP&E> 108,929,000 <DEPRECIATION> (36,096,000) <TOTAL-ASSETS> 123,373,000 <CURRENT-LIABILITIES> 19,019,000 <BONDS> 0 <COMMON> 9,243,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 68,574,000 <TOTAL-LIABILITY-AND-EQUITY> 123,373,000 <SALES> 26,446,000 <TOTAL-REVENUES> 26,446,000 <CGS> 19,148,000 <TOTAL-COSTS> 24,073,000 <OTHER-EXPENSES> (82,000) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 516,000 <INCOME-PRETAX> 1,775,000 <INCOME-TAX> 533,000 <INCOME-CONTINUING> 1,228,000 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,228,000 <EPS-PRIMARY> 0.15 <EPS-DILUTED> 0.15