<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> MAR-31-1999 <CASH> 56,858 <SECURITIES> 0 <RECEIVABLES> 2,603 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 60,726 <PP&E> 107,259 <DEPRECIATION> 69,395 <TOTAL-ASSETS> 178,461 <CURRENT-LIABILITIES> 24,029 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 575 <COMMON> 17,649 <OTHER-SE> 16,520 <TOTAL-LIABILITY-AND-EQUITY> 178,461 <SALES> 30,829 <TOTAL-REVENUES> 30,829 <CGS> 7,293 <TOTAL-COSTS> 17,866 <OTHER-EXPENSES> 107 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 301 <INCOME-PRETAX> 12,555 <INCOME-TAX> 45 <INCOME-CONTINUING> 12,510 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 12,510 <EPS-PRIMARY> 1.62 <EPS-DILUTED> 1.62