<ARTICLE> 5
<LEGEND>
     This schedule contains summary financial information extracted from SEC
Form 10-Q for the three months ended June 30, 2000 and is qualified in its
entirety by reference to such financial statements. (in thousands except
earnings per share)


                                            
<PERIOD-TYPE>                                  6-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-START>                                 JAN-01-2000
<PERIOD-END>                                   JUN-30-2000
<CASH>                                         23,157
<SECURITIES>                                   25,059
<RECEIVABLES>                                  2,427
<ALLOWANCES>                                   (489)
<INVENTORY>                                    5,456
<CURRENT-ASSETS>                               55,509
<PP&E>                                         37,024
<DEPRECIATION>                                 24,398
<TOTAL-ASSETS>                                 128,992
<CURRENT-LIABILITIES>                          24,380
<BONDS>                                        121,421
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       56
<OTHER-SE>                                     (16,865)
<TOTAL-LIABILITY-AND-EQUITY>                   128,992
<SALES>                                        4,893
<TOTAL-REVENUES>                               10,771
<CGS>                                          2,010
<TOTAL-COSTS>                                  2,010
<OTHER-EXPENSES>                               12,766
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             3,204
<INCOME-PRETAX>                                (16,459)
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            (16,459)
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   (16,459)
<EPS-BASIC>                                    (0.30)
<EPS-DILUTED>                                  (0.30)



<F1>
INCLUDES CONVERTIBLE NOTES AND DEBENTURES, LONG-TERM PORTION OF EQUIPMENT
FINANCING ARRANGEMENTS, AND ACCRUED ACQUISITION OBLIGATION.

<F2>
INCLUDES ADDITIONAL PAID IN CAPITAL, OTHER ADDITIONAL CAPITAL AND RETAINED
EARNINGS, APPROPRIATED AND UNAPPROPRIATED.

<F3>
PER CHIEF ACCOUNTANT AT THE SEC, THIS AMOUNT EXCLUDES SALES AND G&A EXPENSES,
INCLUDES COSTS AND EXPENSES APPLICABLE TO SALES AND REVENUES, AND TANGIBLE COSTS
OF GOODS SOLD.

<F4>
INCLUDES SHORT-TERM INVESTMENTS AND RESTRICTED INVESTMENTS.