
<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                         131,100
<SECURITIES>                                         0
<RECEIVABLES>                                1,361,700
<ALLOWANCES>                                         0
<INVENTORY>                                    943,200
<CURRENT-ASSETS>                                     0
<PP&E>                                       3,814,700
<DEPRECIATION>                               1,881,400
<TOTAL-ASSETS>                               6,886,800
<CURRENT-LIABILITIES>                                0
<BONDS>                                      2,040,700
<COMMON>                                       104,200
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                   1,426,000
<TOTAL-LIABILITY-AND-EQUITY>                 6,886,800
<SALES>                                      2,115,300
<TOTAL-REVENUES>                             2,251,200
<CGS>                                        1,821,300
<TOTAL-COSTS>                                1,821,300
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              48,200
<INCOME-PRETAX>                                188,700
<INCOME-TAX>                                    96,600
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    92,600
<EPS-PRIMARY>                                      .90
<EPS-DILUTED>                                        0
        

</TABLE>
