<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                          32,910
<SECURITIES>                                         0
<RECEIVABLES>                                   54,160
<ALLOWANCES>                                         0
<INVENTORY>                                     42,249
<CURRENT-ASSETS>                               139,984
<PP&E>                                         300,051
<DEPRECIATION>                                 124,228
<TOTAL-ASSETS>                                 331,663
<CURRENT-LIABILITIES>                           57,028
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        50,072
<OTHER-SE>                                     168,615
<TOTAL-LIABILITY-AND-EQUITY>                   331,663
<SALES>                                         68,989
<TOTAL-REVENUES>                                68,989
<CGS>                                           43,229
<TOTAL-COSTS>                                   61,388
<OTHER-EXPENSES>                                   163
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 174
<INCOME-PRETAX>                                  7,591
<INCOME-TAX>                                     2,809
<INCOME-CONTINUING>                              4,782
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,782
<EPS-PRIMARY>                                      .12
<EPS-DILUTED>                                      .12