<ARTICLE> 5
<LEGEND>
THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AS OF JUNE 30, 1998 AND THE CONSOLIDATED 
STATEMENT OF INCOME FOR THE SIX MONTHS ENDED JUNE 30, 1998 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>                                           6,578
<SECURITIES>                                         0
<RECEIVABLES>                                  325,565
<ALLOWANCES>                                     1,575
<INVENTORY>                                    312,090
<CURRENT-ASSETS>                               703,721
<PP&E>                                       2,206,407
<DEPRECIATION>                                 576,161
<TOTAL-ASSETS>                               2,469,735
<CURRENT-LIABILITIES>                          542,900
<BONDS>                                        410,010
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           563
<OTHER-SE>                                   1,183,648
<TOTAL-LIABILITY-AND-EQUITY>                 2,469,735
<SALES>                                      2,810,463
<TOTAL-REVENUES>                             2,810,463
<CGS>                                        2,748,556
<TOTAL-COSTS>                                2,748,556
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              13,989
<INCOME-PRETAX>                                 48,355
<INCOME-TAX>                                    14,300
<INCOME-CONTINUING>                             34,055
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    34,055
<EPS-PRIMARY>                                      .61
<EPS-DILUTED>                                      .59