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<PERIOD-TYPE>                   YEAR                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995             DEC-31-1996
<PERIOD-START>                             JAN-01-1995             JAN-01-1996
<PERIOD-END>                               DEC-31-1995             JUN-30-1996
<EXCHANGE-RATE>                                      1                       1
<CASH>                                           5,884                   5,258
<SECURITIES>                                    32,778                  24,148
<RECEIVABLES>                                      400                     696
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<PP&E>                                          10,114                  15,788
<DEPRECIATION>                                   1,503                   2,196
<TOTAL-ASSETS>                                  48,978                  45,357
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<OTHER-SE>                                      25,620                  31,667
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<SALES>                                              0                       0
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<CGS>                                                0                       0
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<INTEREST-EXPENSE>                                 405                     322
<INCOME-PRETAX>                                 (8,021)                 (6,047)
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<NET-INCOME>                                    (8,021)                 (6,047)
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<EPS-DILUTED>                                        0                       0