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<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          13,094
<SECURITIES>                                         0
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<INVENTORY>                                     67,086
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<PP&E>                                         338,340
<DEPRECIATION>                                 136,037
<TOTAL-ASSETS>                                 418,043
<CURRENT-LIABILITIES>                           65,201
<BONDS>                                          1,328
<PREFERRED-MANDATORY>                                0
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<COMMON>                                        20,316
<OTHER-SE>                                     294,913
<TOTAL-LIABILITY-AND-EQUITY>                   418,043
<SALES>                                        327,987
<TOTAL-REVENUES>                               333,280
<CGS>                                          250,099
<TOTAL-COSTS>                                  250,099
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<INCOME-TAX>                                    13,335
<INCOME-CONTINUING>                             22,794
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    22,794
<EPS-PRIMARY>                                     1.09
<EPS-DILUTED>                                     1.09
        

</TABLE>
