<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from SEC Form
10-Q and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                          23,127
<SECURITIES>                                         0
<RECEIVABLES>                                  152,033
<ALLOWANCES>                                     2,234
<INVENTORY>                                    108,179
<CURRENT-ASSETS>                               318,090
<PP&E>                                       1,447,808
<DEPRECIATION>                                 380,484
<TOTAL-ASSETS>                               1,554,189
<CURRENT-LIABILITIES>                          239,255
<BONDS>                                        367,861
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           415
<OTHER-SE>                                     724,058
<TOTAL-LIABILITY-AND-EQUITY>                 1,554,189
<SALES>                                        222,284
<TOTAL-REVENUES>                               222,284
<CGS>                                          194,215
<TOTAL-COSTS>                                  194,215
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                (2,346)
<INCOME-TAX>                                   (1,009)
<INCOME-CONTINUING>                            (2,777)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (2,777)
<EPS-PRIMARY>                                   (0.07)
<EPS-DILUTED>                                   (0.07)