<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-31-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          19,577
<SECURITIES>                                         0
<RECEIVABLES>                                  366,162
<ALLOWANCES>                                     9,542
<INVENTORY>                                    415,637
<CURRENT-ASSETS>                               835,545
<PP&E>                                       2,851,275
<DEPRECIATION>                               1,481,959
<TOTAL-ASSETS>                               2,471,516
<CURRENT-LIABILITIES>                          518,516
<BONDS>                                        327,978
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       290,058
<OTHER-SE>                                     757,974
<TOTAL-LIABILITY-AND-EQUITY>                 2,471,516
<SALES>                                      1,261,469
<TOTAL-REVENUES>                             1,261,469
<CGS>                                        1,015,309
<TOTAL-COSTS>                                1,015,309
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              13,525
<INCOME-PRETAX>                                 50,509
<INCOME-TAX>                                    21,666
<INCOME-CONTINUING>                             28,843
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    28,843
<EPS-BASIC>                                       0.47
<EPS-DILUTED>                                     0.46