<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JUL-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             SEP-30-1997
<CASH>                                          14,930                  14,930
<SECURITIES>                                         0                       0
<RECEIVABLES>                                  109,353                 109,353
<ALLOWANCES>                                       547                     547
<INVENTORY>                                     41,739                  41,739
<CURRENT-ASSETS>                               169,670                 169,670
<PP&E>                                         712,606                 712,606
<DEPRECIATION>                                 421,800                 421,800
<TOTAL-ASSETS>                                 517,212                 517,212
<CURRENT-LIABILITIES>                          113,170                 113,170
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                     196,970                 196,970
<TOTAL-LIABILITY-AND-EQUITY>                   517,212                 517,212
<SALES>                                        180,890                 565,348
<TOTAL-REVENUES>                               180,890                 565,348
<CGS>                                          168,456                 512,123
<TOTAL-COSTS>                                  168,456                 512,123
<OTHER-EXPENSES>                                 8,279                  21,738
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               5,217                  15,710
<INCOME-PRETAX>                                 (1062)                  15,777
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                             (1062)                  15,777
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    (1062)                  15,777
<EPS-PRIMARY>                                    (.03)                     .42
<EPS-DILUTED>                                    (.03)                     .42