<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> JUN-30-2000 <CASH> 33,670 <SECURITIES> 0 <RECEIVABLES> 30,778 <ALLOWANCES> 891 <INVENTORY> 0 <CURRENT-ASSETS> 66,291 <PP&E> 942,880 <DEPRECIATION> 524,835 <TOTAL-ASSETS> 488,351 <CURRENT-LIABILITIES> 39,493 <BONDS> 259,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 135,000 <COMMON> 478 <OTHER-SE> 54,380 <TOTAL-LIABILITY-AND-EQUITY> 488,351 <SALES> 99,474 <TOTAL-REVENUES> 99,951 <CGS> 60,267 <TOTAL-COSTS> 60,267 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 12,784 <INCOME-PRETAX> 26,900 <INCOME-TAX> 0 <INCOME-CONTINUING> 26,900 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 26,900 <EPS-BASIC> 0.52 <EPS-DILUTED> 0.43