<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1996 <PERIOD-END> DEC-31-1996 <CASH> 54,942 <SECURITIES> 0 <RECEIVABLES> 82,875 <ALLOWANCES> 1,190 <INVENTORY> 11,389 <CURRENT-ASSETS> 156,161 <PP&E> 874,780 <DEPRECIATION> 350,591 <TOTAL-ASSETS> 718,293 <CURRENT-LIABILITIES> 98,392 <BONDS> 156,832 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 352 <OTHER-SE> 431,884 <TOTAL-LIABILITY-AND-EQUITY> 718,293 <SALES> 206,529 <TOTAL-REVENUES> 236,404 <CGS> 0 <TOTAL-COSTS> 51,298 <OTHER-EXPENSES> 125,304 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 22,811 <INCOME-PRETAX> 23,420 <INCOME-TAX> 6,016 <INCOME-CONTINUING> 17,404 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 17,404 <EPS-PRIMARY> .51 <EPS-DILUTED> .50