<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 SECURITIES EXCHANGE ACT
OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1996 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996
<PERIOD-START>                             APR-01-1996             JAN-01-1996
<PERIOD-END>                               JUN-30-1996             JUN-30-1996
<CASH>                                          22,898                  22,898
<SECURITIES>                                         0                       0
<RECEIVABLES>                                    5,267                   5,267
<ALLOWANCES>                                      (50)                    (50)
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                28,522                  28,522
<PP&E>                                         169,153                 169,153
<DEPRECIATION>                                (81,193)                (81,193)
<TOTAL-ASSETS>                                 116,827                 116,827
<CURRENT-LIABILITIES>                           15,977                  15,977
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            86                      86
<OTHER-SE>                                      63,216                  63,216
<TOTAL-LIABILITY-AND-EQUITY>                   116,827                 116,827
<SALES>                                          6,938                  13,814
<TOTAL-REVENUES>                                 7,389                  14,919
<CGS>                                                0                       0
<TOTAL-COSTS>                                    5,980                  11,998
<OTHER-EXPENSES>                                   (7)                     (7)
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 892                   1,800
<INCOME-PRETAX>                                    768                   2,547
<INCOME-TAX>                                       248                     778
<INCOME-CONTINUING>                                768                   2,547
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                       520                   1,769
<EPS-PRIMARY>                                      .06                     .20
<EPS-DILUTED>                                      .06                     .20