<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1994 <PERIOD-START> JAN-01-1994 <PERIOD-END> JUN-30-1994 <CASH> 6,045 <SECURITIES> 0 <RECEIVABLES> 211,656 <ALLOWANCES> 7,325 <INVENTORY> 27,442 <CURRENT-ASSETS> 269,320 <PP&E> 1,323,341 <DEPRECIATION> 563,579 <TOTAL-ASSETS> 1,046,189 <CURRENT-LIABILITIES> 211,950 <BONDS> 399,513 <COMMON> 21,282 <PREFERRED-MANDATORY> 6,000 <PREFERRED> 0 <OTHER-SE> 350,661 <TOTAL-LIABILITY-AND-EQUITY> 1,046,189 <SALES> 0 <TOTAL-REVENUES> 951,094 <CGS> 0 <TOTAL-COSTS> 905,583 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 12,010 <INCOME-PRETAX> 33,501 <INCOME-TAX> 13,438 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 19,376 <EPS-PRIMARY> .93 <EPS-DILUTED> .89