<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> JUN-30-1999 <CASH> 1,990,565 <SECURITIES> 3,578,709 <RECEIVABLES> 1,001,563 <ALLOWANCES> 0 <INVENTORY> 223,467 <CURRENT-ASSETS> 6,974,304 <PP&E> 10,026,854 <DEPRECIATION> (6,246,287) <TOTAL-ASSETS> 11,024,838 <CURRENT-LIABILITIES> 3,178,278 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 91,658,971 <OTHER-SE> 85,086,990 <TOTAL-LIABILITY-AND-EQUITY> 11,024,838 <SALES> 0 <TOTAL-REVENUES> 2,844,272 <CGS> 0 <TOTAL-COSTS> 11,301,304 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 105,703 <INCOME-PRETAX> 0 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (8,562,735) <EPS-BASIC> (.28) <EPS-DILUTED> (.28)