<ARTICLE> 5 <MULTIPLIER> 1000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> SEP-30-1999 <CASH> 0 <SECURITIES> 0 <RECEIVABLES> 6,141 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 7,821 <PP&E> 263,665 <DEPRECIATION> 74,792 <TOTAL-ASSETS> 280,995 <CURRENT-LIABILITIES> 7,506 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 55,762 <OTHER-SE> 104,528 <TOTAL-LIABILITY-AND-EQUITY> 280,995 <SALES> 28,727 <TOTAL-REVENUES> 32,429 <CGS> 3,302 <TOTAL-COSTS> 3,302 <OTHER-EXPENSES> 15,820 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,864 <INCOME-PRETAX> 12,515 <INCOME-TAX> 2,490 <INCOME-CONTINUING> 10,025 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 10,025 <EPS-BASIC> 1.19 <EPS-DILUTED> 1.18