<ARTICLE> 5
<MULTIPLIER> 1000

                                                                                    
<PERIOD-TYPE>                                                                             9-MOS
<FISCAL-YEAR-END>                                                                              DEC-31-2000
<PERIOD-END>                                                                                   SEP-30-2000
<CASH>                                                                                              10,486
<SECURITIES>                                                                                        50,548
<RECEIVABLES>                                                                                       69,275
<ALLOWANCES>                                                                                         2,220
<INVENTORY>                                                                                         54,084
<CURRENT-ASSETS>                                                                                   194,820
<PP&E>                                                                                             244,189
<DEPRECIATION>                                                                                     153,888
<TOTAL-ASSETS>                                                                                     402,207
<CURRENT-LIABILITIES>                                                                               51,723
<BONDS>                                                                                             26,867
<PREFERRED-MANDATORY>                                                                                    0
<PREFERRED>                                                                                              0
<COMMON>                                                                                            15,000
<OTHER-SE>                                                                                         269,101
<TOTAL-LIABILITY-AND-EQUITY>                                                                       402,207
<SALES>                                                                                            247,165
<TOTAL-REVENUES>                                                                                   259,484
<CGS>                                                                                              156,998
<TOTAL-COSTS>                                                                                      208,025
<OTHER-EXPENSES>                                                                                         0
<LOSS-PROVISION>                                                                                         0
<INTEREST-EXPENSE>                                                                                   1,166
<INCOME-PRETAX>                                                                                     50,293
<INCOME-TAX>                                                                                        19,341
<INCOME-CONTINUING>                                                                                 30,952
<DISCONTINUED>                                                                                           0
<EXTRAORDINARY>                                                                                          0
<CHANGES>                                                                                                0
<NET-INCOME>                                                                                        30,952
<EPS-BASIC>                                                                                         3.09
<EPS-DILUTED>                                                                                         3.03