<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-START> JAN-01-2000 <PERIOD-END> SEP-30-2000 <CASH> 1,758 <SECURITIES> 0 <RECEIVABLES> 19,769 <ALLOWANCES> (275) <INVENTORY> 3,809 <CURRENT-ASSETS> 25,061 <PP&E> 650,373 <DEPRECIATION> (345,519) <TOTAL-ASSETS> 329,915 <CURRENT-LIABILITIES> 23,950 <BONDS> 119,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 203 <OTHER-SE> 163,414 <TOTAL-LIABILITY-AND-EQUITY> 329,915 <SALES> 98,524 <TOTAL-REVENUES> 99,570 <CGS> 45,572 <TOTAL-COSTS> 50,612 <OTHER-EXPENSES> 269 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 7,131 <INCOME-PRETAX> 41,558 <INCOME-TAX> 8,312 <INCOME-CONTINUING> 33,246 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 33,246 <EPS-BASIC> 1.80 <EPS-DILUTED> 1.43