<ARTICLE> 5
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<CASH>                                             137
<SECURITIES>                                         0
<RECEIVABLES>                                   93,184
<ALLOWANCES>                                     1,114
<INVENTORY>                                     44,055
<CURRENT-ASSETS>                               192,601
<PP&E>                                       2,150,580
<DEPRECIATION>                                 828,079
<TOTAL-ASSETS>                               1,687,263
<CURRENT-LIABILITIES>                           86,443
<BONDS>                                        627,821
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                     16,378
<COMMON>                                       447,700
<OTHER-SE>                                     265,809
<TOTAL-LIABILITY-AND-EQUITY>                 1,687,263
<SALES>                                        357,095
<TOTAL-REVENUES>                               357,095
<CGS>                                          209,926
<TOTAL-COSTS>                                  271,607
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              24,362
<INCOME-PRETAX>                                 67,631
<INCOME-TAX>                                    21,532
<INCOME-CONTINUING>                             46,099
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    46,099
<EPS-PRIMARY>                                     0.00<F1>
<EPS-DILUTED>                                     0.00<F1>
<FN>
<F1>*All common stock is owned by parent, no EPS required.
</FN>