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<TABLE> <S> <C>
<ARTICLE> 5
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 8,945
<SECURITIES> 37,166
<RECEIVABLES> 69,993
<ALLOWANCES> 2,599
<INVENTORY> 58,650
<CURRENT-ASSETS> 183,385
<PP&E> 243,899
<DEPRECIATION> 152,494
<TOTAL-ASSETS> 390,254
<CURRENT-LIABILITIES> 50,521
<BONDS> 27,565
0
0
<COMMON> 15,000
<OTHER-SE> 258,964
<TOTAL-LIABILITY-AND-EQUITY> 390,254
<SALES> 165,287
<TOTAL-REVENUES> 172,441
<CGS> 105,887
<TOTAL-COSTS> 139,169
<OTHER-EXPENSES> 107
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 772
<INCOME-PRETAX> 32,393
<INCOME-TAX> 12,520
<INCOME-CONTINUING> 19,873
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 19,873
<EPS-BASIC> 1.98
<EPS-DILUTED> 1.96
</TABLE>
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