<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                        
<PERIOD-TYPE>                              9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                             840
<SECURITIES>                                         0
<RECEIVABLES>                                   21,868
<ALLOWANCES>                                         0
<INVENTORY>                                     23,794
<CURRENT-ASSETS>                                54,374
<PP&E>                                       1,009,385
<DEPRECIATION>                                (468,254)
<TOTAL-ASSETS>                                 619,869
<CURRENT-LIABILITIES>                           48,377
<BONDS>                                        267,371
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0    
<COMMON>                                         2,774
<OTHER-SE>                                     179,194
<TOTAL-LIABILITY-AND-EQUITY>                   619,869
<SALES>                                        187,306
<TOTAL-REVENUES>                               192,841
<CGS>                                                0
<TOTAL-COSTS>                                  233,839
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              12,645
<INCOME-PRETAX>                                (56,257)
<INCOME-TAX>                                   (21,940)
<INCOME-CONTINUING>                            (34,317)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (34,317)
<EPS-PRIMARY>                                    (1.38)
<EPS-DILUTED>                                    (1.38)
<FN>
The information has been prepared in accordance with SFAS No. 128.
Basic and dilted EPS have been entered in place of primary and fully diluted,
respectively.
</FN>