<ARTICLE> 5
<MULTIPLIER> 1,000
<CURRENCY> U.S.DOLLARS
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<EXCHANGE-RATE>                                      1
<CASH>                                           1,626
<SECURITIES>                                         0
<RECEIVABLES>                                  146,148
<ALLOWANCES>                                     1,978
<INVENTORY>                                     42,631
<CURRENT-ASSETS>                               202,781
<PP&E>                                       2,220,157
<DEPRECIATION>                                 894,300
<TOTAL-ASSETS>                               1,686,705
<CURRENT-LIABILITIES>                           89,721
<BONDS>                                        628,202
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                     16,378
<COMMON>                                       447,700
<OTHER-SE>                                     262,565
<TOTAL-LIABILITY-AND-EQUITY>                 1,686,705
<SALES>                                        369,217
<TOTAL-REVENUES>                               369,217
<CGS>                                          213,539
<TOTAL-COSTS>                                  275,968
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              24,009
<INCOME-PRETAX>                                 74,017
<INCOME-TAX>                                    25,591
<INCOME-CONTINUING>                             48,426
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    48,426
<EPS-PRIMARY>                                     0.00<F1>
<EPS-DILUTED>                                     0.00<F1>
<FN>
<F1>*All common stock is owned by parent, no EPS required.
</FN>