<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                          18,594
<SECURITIES>                                         0
<RECEIVABLES>                                  252,356
<ALLOWANCES>                                    18,074
<INVENTORY>                                    204,910
<CURRENT-ASSETS>                               594,714
<PP&E>                                       6,119,706
<DEPRECIATION>                               3,621,109
<TOTAL-ASSETS>                               4,405,887
<CURRENT-LIABILITIES>                          485,995
<BONDS>                                      2,264,685
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        43,507
<OTHER-SE>                                   1,095,032
<TOTAL-LIABILITY-AND-EQUITY>                 4,405,887
<SALES>                                      2,511,247
<TOTAL-REVENUES>                             2,654,304
<CGS>                                        1,391,772
<TOTAL-COSTS>                                1,459,436
<OTHER-EXPENSES>                               338,703
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             163,806
<INCOME-PRETAX>                                304,395
<INCOME-TAX>                                   124,140
<INCOME-CONTINUING>                            180,255
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (5,188)
<CHANGES>                                            0
<NET-INCOME>                                   175,067
<EPS-PRIMARY>                                     3.72<F1>
<EPS-DILUTED>                                     3.65
        
<FN>
<F1> Reflects basic earnings per share.
</FN>