
<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                         179,800
<SECURITIES>                                         0
<RECEIVABLES>                                1,363,800
<ALLOWANCES>                                         0
<INVENTORY>                                    932,400
<CURRENT-ASSETS>                                     0
<PP&E>                                       3,859,100
<DEPRECIATION>                               1,911,800
<TOTAL-ASSETS>                               6,934,600
<CURRENT-LIABILITIES>                                0
<BONDS>                                      2,097,500
<COMMON>                                       104,400
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                   1,481,200
<TOTAL-LIABILITY-AND-EQUITY>                 6,934,600
<SALES>                                      4,256,100
<TOTAL-REVENUES>                             4,467,500
<CGS>                                        3,646,400
<TOTAL-COSTS>                                3,646,400
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              97,900
<INCOME-PRETAX>                                342,600
<INCOME-TAX>                                   157,300
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   186,400
<EPS-PRIMARY>                                     1.80
<EPS-DILUTED>                                        0
        

</TABLE>
