<ARTICLE> 5
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                             621
<SECURITIES>                                         0
<RECEIVABLES>                                    1,421
<ALLOWANCES>                                         0
<INVENTORY>                                      1,365
<CURRENT-ASSETS>                                 3,407
<PP&E>                                          11,524
<DEPRECIATION>                                   6,187
<TOTAL-ASSETS>                                   9,503
<CURRENT-LIABILITIES>                            1,472
<BONDS>                                          1,250
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                        203
<COMMON>                                         1,248
<OTHER-SE>                                       3,551
<TOTAL-LIABILITY-AND-EQUITY>                     9,503
<SALES>                                          5,830
<TOTAL-REVENUES>                                 5,893
<CGS>                                            4,506
<TOTAL-COSTS>                                    4,506
<OTHER-EXPENSES>                                   323
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  77
<INCOME-PRETAX>                                    573
<INCOME-TAX>                                       195
<INCOME-CONTINUING>                                339
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       339
<EPS-PRIMARY>                                     1.46
<EPS-DILUTED>                                     1.46