<ARTICLE> 5
<MULTIPLIER> 1,000,000
       
                                        
<PERIOD-TYPE>                                    6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                             172
<SECURITIES>                                         0
<RECEIVABLES>                                      272
<ALLOWANCES>                                         6
<INVENTORY>                                        486
<CURRENT-ASSETS>                                 1,094
<PP&E>                                           7,540
<DEPRECIATION>                                   2,478
<TOTAL-ASSETS>                                   6,677
<CURRENT-LIABILITIES>                            1,000
<BONDS>                                          2,103
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          5
<COMMON>                                             1
<OTHER-SE>                                       2,431
<TOTAL-LIABILITY-AND-EQUITY>                     6,677
<SALES>                                          1,387
<TOTAL-REVENUES>                                 1,424
<CGS>                                            1,168
<TOTAL-COSTS>                                    1,227
<OTHER-EXPENSES>                                    17
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  34<F1>
<INCOME-PRETAX>                                    149
<INCOME-TAX>                                        34
<INCOME-CONTINUING>                                115
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       115
<EPS-PRIMARY>                                     1.13
<EPS-DILUTED>                                     1.12
<FN>
<F1>Net of interest income, $13 million, and capitalized interest, $40 million.
</FN>