<ARTICLE> 5 <MULTIPLIER> 1 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> 9-MOS 9-MOS <FISCAL-YEAR-END> JUN-30-1998 JUN-30-1997 <PERIOD-START> JUL-01-1997 JUL-01-1996 <PERIOD-END> MAR-31-1998 MAR-31-1997 <EXCHANGE-RATE> 1 1 <CASH> 14,408,792 12,203,348 <SECURITIES> 0 946,946 <RECEIVABLES> 1,784,519 1,732,372 <ALLOWANCES> 0 0 <INVENTORY> 189,415 282,397 <CURRENT-ASSETS> 16,382,726 15,165,063 <PP&E> 44,608,128 70,377,381 <DEPRECIATION> 19,716,212 28,213,108 <TOTAL-ASSETS> 41,789,102 57,848,105 <CURRENT-LIABILITIES> 1,927,180 2,470,482 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 249,825 248,512 <OTHER-SE> 17,866,393 22,481,512 <TOTAL-LIABILITY-AND-EQUITY> 41,789,102 57,848,105 <SALES> 11,398,364 13,965,661 <TOTAL-REVENUES> 12,233,272 15,743,890 <CGS> 0 0 <TOTAL-COSTS> 9,221,023 11,572,188 <OTHER-EXPENSES> 1,264,019 1,645,971 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 21,700 40,216 <INCOME-PRETAX> 1,726,530 2,485,515 <INCOME-TAX> 1,017,364 1,900,292 <INCOME-CONTINUING> 709,166 585,223 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 709,166 585,223 <EPS-PRIMARY> 0.03 0.02 <EPS-DILUTED> 0.03 0.02