<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF OPERATIONS ON FORM 10-QSB AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-QSB </LEGEND> <MULTIPLIER> 1 <CURRENCY> U.S.DOLLARS <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> SEP-30-1997 <EXCHANGE-RATE> 1 <CASH> 1,402,548 <SECURITIES> 0 <RECEIVABLES> 3,175,420 <ALLOWANCES> 85,000 <INVENTORY> 1,667,631 <CURRENT-ASSETS> 6,915,143 <PP&E> 23,559,710 <DEPRECIATION> 19,021,715 <TOTAL-ASSETS> 11,807,421 <CURRENT-LIABILITIES> 2,037,538 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 37,155 <OTHER-SE> 9,732,728 <TOTAL-LIABILITY-AND-EQUITY> 11,807,421 <SALES> 0 <TOTAL-REVENUES> 17,059,581 <CGS> 0 <TOTAL-COSTS> 11,112,412 <OTHER-EXPENSES> 4,284,212 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 13,940 <INCOME-PRETAX> 1,676,897 <INCOME-TAX> 100,000 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,576,897 <EPS-PRIMARY> 0.50 <EPS-DILUTED> 0.48