<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT MARCH 31, 1997, JUNE 30, 1996 AND SEPTEMBER 30, 1996 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997, JUNE 30, 1997 AND SEPTEMBER 30, 1997 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED AS PART OF ITS QUARTERLY REPORT ON FORM 10-Q FOR THE PERIOD MARCH 31, 1997. </LEGEND> <PERIOD-TYPE> 3-MOS 6-MOS 9-MOS <FISCAL-YEAR-END> DEC-31-1997 DEC-31-1997 DEC-31-1997 <PERIOD-START> JAN-01-1997 JAN-01-1997 JAN-01-1997 <PERIOD-END> JAN-01-1997 JUN-30-1997 JAN-01-1997 <CASH> 1,750,995 1,653,049 1,616,451 <SECURITIES> 0 0 0 <RECEIVABLES> 1,097,401 1,044,323 1,195,517 <ALLOWANCES> 0 0 0 <INVENTORY> 0 0 0 <CURRENT-ASSETS> 2,848,396 2,697,372 2,811,968 <PP&E> 63,500,454 63,405,182 63,301,457 <DEPRECIATION> 16,876,941 17,776,635 18,645,814 <TOTAL-ASSETS> 49,557,236 48,364,211 47,480,280 <CURRENT-LIABILITIES> 626,330 551,330 476,330 <BONDS> 0 0 0 <PREFERRED-MANDATORY> 0 0 0 <PREFERRED> 0 0 0 <COMMON> 0 0 0 <OTHER-SE> 48,930,906 47,812,881 47,003,950 <TOTAL-LIABILITY-AND-EQUITY> 49,557,236 48,364,211 48,480,280 <SALES> 0 0 0 <TOTAL-REVENUES> 1,396,464 2,743,047 4,230,484 <CGS> 0 0 0 <TOTAL-COSTS> 1,003,834 2,009,504 2,976,765 <OTHER-EXPENSES> 0 0 0 <LOSS-PROVISION> 0 0 0 <INTEREST-EXPENSE> 0 0 0 <INCOME-PRETAX> 0 0 0 <INCOME-TAX> 0 0 0 <INCOME-CONTINUING> 0 0 0 <DISCONTINUED> 0 0 0 <EXTRAORDINARY> 0 0 0 <CHANGES> 0 0 0 <NET-INCOME> 429,063 790,446 1,353,048 <EPS-PRIMARY> 0 0 0 <EPS-DILUTED> 0 0 0