<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENT OF EARNINGS FOR YEAR ENDED DECEMBER 31, 1999, AND THE
CONSOLIDATED BALANCE SHEET AS OF DECEMBER 31, 1999 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                          52,834
<SECURITIES>                                         0
<RECEIVABLES>                                  339,413
<ALLOWANCES>                                     9,722
<INVENTORY>                                    178,734
<CURRENT-ASSETS>                               624,724
<PP&E>                                       3,149,897
<DEPRECIATION>                               1,510,182
<TOTAL-ASSETS>                               2,839,493
<CURRENT-LIABILITIES>                          386,642
<BONDS>                                        698,862
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       139,705
<OTHER-SE>                                   1,183,948
<TOTAL-LIABILITY-AND-EQUITY>                 2,839,493
<SALES>                                      2,355,778
<TOTAL-REVENUES>                             2,355,778
<CGS>                                        1,769,327
<TOTAL-COSTS>                                1,769,327
<OTHER-EXPENSES>                                22,714
<LOSS-PROVISION>                                  (109)
<INTEREST-EXPENSE>                              48,576
<INCOME-PRETAX>                                351,561
<INCOME-TAX>                                   111,868
<INCOME-CONTINUING>                            239,693
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   239,693
<EPS-BASIC>                                       2.38
<EPS-DILUTED>                                     2.35