<TABLE> <S> <C>

<ARTICLE>                                    5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF OPERATIONS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER>                                 1,000,000

<S>                             <C>              <C>               <C>              <C>
<PERIOD-TYPE>                     9-MOS            6-MOS             3-MOS           12-MOS
<FISCAL-YEAR-END>               DEC-31-1997      DEC-31-1997       DEC-31-1997      DEC-31-1996
<PERIOD-END>                    SEP-30-1997      JUN-30-1997       MAR-31-1997      DEC-31-1996
<CASH>                              46               37                37               38
<SECURITIES>                         0                0                 0                0
<RECEIVABLES>                      293              292               267              251
<ALLOWANCES>                         7                7                 8                8
<INVENTORY>                         99              102                97               97
<CURRENT-ASSETS>                   486              480               444              439
<PP&E>                             817              802               795              804
<DEPRECIATION>                     412              399               385              375
<TOTAL-ASSETS>                   1,431            1,436             1,385            1,418
<CURRENT-LIABILITIES>              196              201               193              227
<BONDS>                            728              754               727              744
<PREFERRED-MANDATORY>                7                6                 6                6
<PREFERRED>                          0                0                 0                0
<COMMON>                             3                3                 3                3
<OTHER-SE>                         424              399               398              376
<TOTAL-LIABILITY-AND-EQUITY>     1,431            1,436             1,385            1,418
<SALES>                            961              629               306            1,037
<TOTAL-REVENUES>                   961              629               306            1,037
<CGS>                              384              251               122              409
<TOTAL-COSTS>                      384              251               122              409
<OTHER-EXPENSES>                     0                0                 0                0
<LOSS-PROVISION>                     0                0                 0                0
<INTEREST-EXPENSE>                  35               23                11               26
<INCOME-PRETAX>                    103               62                29              100
<INCOME-TAX>                        37               22                10               35
<INCOME-CONTINUING>                 66               40                19               64
<DISCONTINUED>                       0                0                 0                0
<EXTRAORDINARY>                      0                0                 0                0
<CHANGES>                            0                0                 0                0
<NET-INCOME>                        66               40                19               64
<EPS-PRIMARY>                     2.18             1.30              0.61             2.13
<EPS-DILUTED>                     2.02             1.21              0.57             2.01


</TABLE>