<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> JUN-30-1998 <PERIOD-END> DEC-31-1997 <CASH> 5,953,799 <SECURITIES> 527,744 <RECEIVABLES> 9,706,170 <ALLOWANCES> 115,917 <INVENTORY> 0 <CURRENT-ASSETS> 18,760,519 <PP&E> 87,203,036 <DEPRECIATION> 32,273,833 <TOTAL-ASSETS> 77,080,875 <CURRENT-LIABILITIES> 24,335,154 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 32,318 <OTHER-SE> 0 <TOTAL-LIABILITY-AND-EQUITY> 77,080,875 <SALES> 58,941,915 <TOTAL-REVENUES> 58,941,915 <CGS> 0 <TOTAL-COSTS> 54,805,400 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,764,779 <INCOME-PRETAX> 2,548,473 <INCOME-TAX> 697,000 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,851,473 <EPS-PRIMARY> .59 <EPS-DILUTED> .57