<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1995
<PERIOD-START>                             JAN-01-1996             JAN-01-1995
<PERIOD-END>                               DEC-31-1996             DEC-31-1995
<CASH>                                          31,749                  29,553
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   52,211                  52,532
<ALLOWANCES>                                       954                   1,015
<INVENTORY>                                     96,324                  92,727
<CURRENT-ASSETS>                               197,233                 191,747
<PP&E>                                         404,127                 374,367
<DEPRECIATION>                                 273,907                 253,173
<TOTAL-ASSETS>                                 355,779                 331,853
<CURRENT-LIABILITIES>                           69,061                  66,591
<BONDS>                                         18,860                  16,996
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        21,909                  21,330
<OTHER-SE>                                     197,348                 178,972
<TOTAL-LIABILITY-AND-EQUITY>                   355,779                 331,853
<SALES>                                        376,279                 369,618
<TOTAL-REVENUES>                               376,279                 369,618
<CGS>                                          267,713                 268,732
<TOTAL-COSTS>                                  341,013                 339,282
<OTHER-EXPENSES>                                   896                   1,047
<LOSS-PROVISION>                                    65                     203
<INTEREST-EXPENSE>                               1,128                   1,653
<INCOME-PRETAX>                                 33,177                  27,433
<INCOME-TAX>                                     8,686                   6,744
<INCOME-CONTINUING>                             24,491                  20,689
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    24,491                  20,689
<EPS-PRIMARY>                                     1.55                    1.28
<EPS-DILUTED>                                     1.53                    1.27