<ARTICLE> 5 <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS 6-MOS 9-MOS <FISCAL-YEAR-END> DEC-31-1997 DEC-31-1997 DEC-31-1997 <PERIOD-START> JAN-01-1997 JAN-01-1997 JAN-01-1997 <PERIOD-END> MAR-31-1997 JUN-30-1997 SEP-30-1997 <CASH> 4,092 2,014 2,119 <SECURITIES> 77 78 19 <RECEIVABLES> 31,684 34,396 37,509 <ALLOWANCES> 3,194 3,086 3,059 <INVENTORY> 52,034 59,177 62,080 <CURRENT-ASSETS> 99,759 109,640 112,806 <PP&E> 241,981 268,246 277,788 <DEPRECIATION> 96,564 99,347 99,171 <TOTAL-ASSETS> 262,182 295,816 309,842 <CURRENT-LIABILITIES> 59,092 58,663 41,409 <BONDS> 0 0 0 <PREFERRED-MANDATORY> 0 0 0 <PREFERRED> 0 0 0 <COMMON> 57,282 57,776 61,452 <OTHER-SE> 92,046 103,088 110,375 <TOTAL-LIABILITY-AND-EQUITY> 262,182 295,816 309,842 <SALES> 77,026 156,233 234,666 <TOTAL-REVENUES> 77,127 157,384 236,470 <CGS> 61,145 119,543 181,356 <TOTAL-COSTS> 4,376 8,202 12,250 <OTHER-EXPENSES> (262) (229) (300) <LOSS-PROVISION> 0 0 0 <INTEREST-EXPENSE> 144 304 707 <INCOME-PRETAX> 11,766 29,662 42,600 <INCOME-TAX> 3,883 9,790 13,853 <INCOME-CONTINUING> 7,883 19,872 28,747 <DISCONTINUED> 0 0 0 <EXTRAORDINARY> 0 0 0 <CHANGES> 0 0 0 <NET-INCOME> 7,883 19,872 28,747 <EPS-PRIMARY> .29 .72 1.04 <EPS-DILUTED> .28 .70 1.01