<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND THE CONSOLIDATED STATEMENT OF INCOME
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          21,698
<SECURITIES>                                         0
<RECEIVABLES>                                  125,414 
<ALLOWANCES>                                   (3,181)
<INVENTORY>                                     73,194
<CURRENT-ASSETS>                               237,838
<PP&E>                                         489,252
<DEPRECIATION>                               (246,231)
<TOTAL-ASSETS>                                 566,608
<CURRENT-LIABILITIES>                          115,235
<BONDS>                                         83,623
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           179
<OTHER-SE>                                     320,807
<TOTAL-LIABILITY-AND-EQUITY>                   566,608
<SALES>                                        304,001
<TOTAL-REVENUES>                               304,001
<CGS>                                          196,573
<TOTAL-COSTS>                                  271,490 
<OTHER-EXPENSES>                                74,917
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             (3,435)
<INCOME-PRETAX>                                 31,170
<INCOME-TAX>                                    11,670
<INCOME-CONTINUING>                             19,500 
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    19,500
<EPS-PRIMARY>                                     1.09 
<EPS-DILUTED>                                     1.09