<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S CONSOLIDATED BALANCE SHEET AND PROFIT & LOSS FINANCIAL STATEMENTS AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          22,103
<SECURITIES>                                         0
<RECEIVABLES>                                  391,247
<ALLOWANCES>                                     7,816
<INVENTORY>                                    488,058
<CURRENT-ASSETS>                               940,372
<PP&E>                                       2,766,076
<DEPRECIATION>                               1,486,667
<TOTAL-ASSETS>                               2,469,771
<CURRENT-LIABILITIES>                          502,043
<BONDS>                                        339,759
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       296,184
<OTHER-SE>                                     767,407
<TOTAL-LIABILITY-AND-EQUITY>                 2,469,771
<SALES>                                      1,409,128
<TOTAL-REVENUES>                             1,409,128
<CGS>                                        1,070,020
<TOTAL-COSTS>                                1,070,020
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              12,470
<INCOME-PRETAX>                                140,970
<INCOME-TAX>                                    53,145
<INCOME-CONTINUING>                             87,825
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    87,825
<EPS-PRIMARY>                                     1.41
<EPS-DILUTED>                                     1.39