<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM QUARTERLY
REPORT ON 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          18,757
<SECURITIES>                                     6,512
<RECEIVABLES>                                   11,693
<ALLOWANCES>                                         0
<INVENTORY>                                      1,602
<CURRENT-ASSETS>                                32,514
<PP&E>                                         340,295
<DEPRECIATION>                                 126,096
<TOTAL-ASSETS>                                 257,648
<CURRENT-LIABILITIES>                           20,354
<BONDS>                                        124,280
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        27,379
<OTHER-SE>                                      73,176
<TOTAL-LIABILITY-AND-EQUITY>                   257,648
<SALES>                                         55,641
<TOTAL-REVENUES>                                60,426
<CGS>                                           21,118
<TOTAL-COSTS>                                   57,566
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               6,644
<INCOME-PRETAX>                                  2,860
<INCOME-TAX>                                       541
<INCOME-CONTINUING>                              2,319
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,319
<EPS-PRIMARY>                                      .26
<EPS-DILUTED>                                      .26