<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONSOLIDATED BALANCE SHEETS AND CONSOLIDATED INCOME STATEMENT FOR THE PERIOD ENDING SEPTEMBER 30, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1997 <PERIOD-END> SEP-30-1997 <CASH> 706,138 <SECURITIES> 0 <RECEIVABLES> 3,375,097 <ALLOWANCES> (343,457) <INVENTORY> 42,062 <CURRENT-ASSETS> 6,921,231 <PP&E> 62,328,116 <DEPRECIATION> 22,321,061 <TOTAL-ASSETS> 49,820,824 <CURRENT-LIABILITIES> 8,657,885 <BONDS> 6,239,455 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,004,370 <OTHER-SE> 15,261,675 <TOTAL-LIABILITY-AND-EQUITY> 49,820,824 <SALES> 18,830,951 <TOTAL-REVENUES> 20,339,562 <CGS> 7,582,691 <TOTAL-COSTS> 15,920,946 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 100,420 <INTEREST-EXPENSE> 593,685 <INCOME-PRETAX> 2,704,418 <INCOME-TAX> 1,085,605 <INCOME-CONTINUING> 1,618,813 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,618,813 <EPS-PRIMARY> 1.61 <EPS-DILUTED> 1.61