<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from financial
statements for the period ended September 30, 1998 and is qualified in its
entirety by reference to such financial statements.
</LEGEND>
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                          18,600
<SECURITIES>                                    11,901
<RECEIVABLES>                                   50,934
<ALLOWANCES>                                        85
<INVENTORY>                                     13,727
<CURRENT-ASSETS>                               101,908
<PP&E>                                         789,531
<DEPRECIATION>                                 340,396
<TOTAL-ASSETS>                                 635,151
<CURRENT-LIABILITIES>                           73,770
<BONDS>                                        310,136
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         6,756
<OTHER-SE>                                     168,072
<TOTAL-LIABILITY-AND-EQUITY>                   635,151
<SALES>                                              0
<TOTAL-REVENUES>                               287,091
<CGS>                                                0
<TOTAL-COSTS>                                  259,447
<OTHER-EXPENSES>                                21,484
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              21,484
<INCOME-PRETAX>                                  7,421
<INCOME-TAX>                                     2,900
<INCOME-CONTINUING>                              4,521
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (1,029)
<CHANGES>                                            0
<NET-INCOME>                                     3,492
<EPS-PRIMARY>                                     0.52
<EPS-DILUTED>                                     0.52<F1><F2>
<FN>
<F1>Amounts inapplicable or not disclosed as a separate line on the Balance
Sheet or Statement of Income are reported as 0 herein.
<F2>*Notes and accounts receivable - trade are reported net of allowances for
doubtful accounts in the Balance Sheet.
</FN>