<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                          35,682
<SECURITIES>                                         0
<RECEIVABLES>                                  291,792
<ALLOWANCES>                                   (6,322)
<INVENTORY>                                    348,531
<CURRENT-ASSETS>                               704,704
<PP&E>                                       3,750,239
<DEPRECIATION>                               (778,260)
<TOTAL-ASSETS>                               4,360,860
<CURRENT-LIABILITIES>                          446,626
<BONDS>                                        840,930
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                     1,227,311
<OTHER-SE>                                   1,184,855
<TOTAL-LIABILITY-AND-EQUITY>                 4,360,860
<SALES>                                      1,765,622
<TOTAL-REVENUES>                             1,765,622
<CGS>                                        1,288,130
<TOTAL-COSTS>                                1,288,130
<OTHER-EXPENSES>                               125,218
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              52,940
<INCOME-PRETAX>                                299,334
<INCOME-TAX>                                    92,504
<INCOME-CONTINUING>                            206,830
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   206,830
<EPS-PRIMARY>                                     3.82
<EPS-DILUTED>                                     3.80