<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> JUN-30-1997 <CASH> 1,567,624 <SECURITIES> 0 <RECEIVABLES> 56,305,723 <ALLOWANCES> 2,299,000 <INVENTORY> 40,672,481 <CURRENT-ASSETS> 101,698,803 <PP&E> 162,292,947 <DEPRECIATION> 74,940,266 <TOTAL-ASSETS> 215,113,124 <CURRENT-LIABILITIES> 32,760,562 <BONDS> 0 <COMMON> 10,680,646 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 160,476,155 <TOTAL-LIABILITY-AND-EQUITY> 215,113,124 <SALES> 162,973,718 <TOTAL-REVENUES> 162,973,718 <CGS> 112,214,281 <TOTAL-COSTS> 145,733,746 <OTHER-EXPENSES> 18,380,889 <LOSS-PROVISION> 2,299,000 <INTEREST-EXPENSE> 106,775 <INCOME-PRETAX> 17,239,972 <INCOME-TAX> 3,777,000 <INCOME-CONTINUING> 10,121,972 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 10,121,972 <EPS-PRIMARY> .6 <EPS-DILUTED> .6