<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> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> MAR-31-1998 <EXCHANGE-RATE> 1 <CASH> 691,644 <SECURITIES> 0 <RECEIVABLES> 4,075,297 <ALLOWANCES> 40,000 <INVENTORY> 1,675,830 <CURRENT-ASSETS> 7,347,583 <PP&E> 24,382,076 <DEPRECIATION> 19,464,148 <TOTAL-ASSETS> 12,596,205 <CURRENT-LIABILITIES> 2,368,476 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 37,889 <OTHER-SE> 10,189,840 <TOTAL-LIABILITY-AND-EQUITY> 12,596,205 <SALES> 1,326,640 <TOTAL-REVENUES> 4,442,526 <CGS> 803,761 <TOTAL-COSTS> 4,428,704 <OTHER-EXPENSES> 12,337 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 26,159 <INCOME-TAX> 9,000 <INCOME-CONTINUING> 17,159 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 17,159 <EPS-PRIMARY> 0.01 <EPS-DILUTED> 0.01