<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> JUN-30-1998 <CASH> 3,441,319 <SECURITIES> 0 <RECEIVABLES> 286,125 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 3,727,444 <PP&E> 45,382,342 <DEPRECIATION> 40,125,665 <TOTAL-ASSETS> 8,984,121 <CURRENT-LIABILITIES> 492,926 <BONDS> 2,336,583 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 6,154,612 <TOTAL-LIABILITY-AND-EQUITY> 8,984,121 <SALES> 0 <TOTAL-REVENUES> 1,915,234 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 2,491,512 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 109,237 <INCOME-PRETAX> (685,515) <INCOME-TAX> 0 <INCOME-CONTINUING> (685,515) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (685,515) <EPS-PRIMARY> 0 <EPS-DILUTED> 0