<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> JUN-30-1996 <CASH> 50,058 <SECURITIES> 227,119 <RECEIVABLES> 27,537 <ALLOWANCES> 0 <INVENTORY> 16,618 <CURRENT-ASSETS> 328,066 <PP&E> 192,538 <DEPRECIATION> 46,049 <TOTAL-ASSETS> 489,651 <CURRENT-LIABILITIES> 64,391 <BONDS> 51,035 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 358 <OTHER-SE> 373,867 <TOTAL-LIABILITY-AND-EQUITY> 489,651 <SALES> 75,535 <TOTAL-REVENUES> 84,244 <CGS> 7,989 <TOTAL-COSTS> 94,695 <OTHER-EXPENSES> 1,318 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> (11,769) <INCOME-TAX> 982 <INCOME-CONTINUING> (12,751) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (12,751) <EPS-PRIMARY> (.36) <EPS-DILUTED> (.36)