<ARTICLE>                     5                       
<MULTIPLIER>                  1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                         191,219
<SECURITIES>                                         0
<RECEIVABLES>                                  220,708
<ALLOWANCES>                                         0
<INVENTORY>                                    444,079
<CURRENT-ASSETS>                               910,735
<PP&E>                                       4,182,676
<DEPRECIATION>                               2,749,488
<TOTAL-ASSETS>                               2,807,079
<CURRENT-LIABILITIES>                          315,474
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                    11,129,948
<OTHER-SE>                                  (9,321,860)
<TOTAL-LIABILITY-AND-EQUITY>                 2,807,079
<SALES>                                        775,254
<TOTAL-REVENUES>                               775,254
<CGS>                                          729,542
<TOTAL-COSTS>                                  729,542
<OTHER-EXPENSES>                               321,631
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              17,996
<INCOME-PRETAX>                               (293,085)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (293,085)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (293,085)
<EPS-PRIMARY>                                      .82
<EPS-DILUTED>                                      .82