<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITY EXCHANGE ACT OF
1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1999.
</LEGEND>
<MULTIPLIER> 1,000

                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1999
<PERIOD-START>                             APR-01-1999             JAN-01-1999
<PERIOD-END>                               JUN-30-1999             JUN-30-1999
<CASH>                                           8,330                   8,330
<SECURITIES>                                         0                       0
<RECEIVABLES>                                    3,679                   3,679
<ALLOWANCES>                                      (50)                    (50)
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                12,336                  12,336
<PP&E>                                         233,050                 233,050
<DEPRECIATION>                               (157,580)               (157,580)
<TOTAL-ASSETS>                                 101,944                 101,944
<CURRENT-LIABILITIES>                            9,963                   9,963
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            87                      87
<OTHER-SE>                                      41,109                  41,109
<TOTAL-LIABILITY-AND-EQUITY>                   101,944                 101,944
<SALES>                                          5,964                  10,905
<TOTAL-REVENUES>                                 6,460                  11,865
<CGS>                                                0                       0
<TOTAL-COSTS>                                    5,187                  11,698
<OTHER-EXPENSES>                                     0                       1
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 924                   1,859
<INCOME-PRETAX>                                    428                 (1,526)
<INCOME-TAX>                                      (55)                   (888)
<INCOME-CONTINUING>                                  0                       0
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                       483                   (638)
<EPS-BASIC>                                       0.06                  (0.07)
<EPS-DILUTED>                                     0.06                  (0.07)