<TABLE> <S> <C>

<ARTICLE>   5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Balance Sheet at December 31, 1997, 1996, and 1995, and the
Consolidated Statement of Income for the years then ended and is qualified in
its entirety by reference to such Form 10-K.
</LEGEND>
<MULTIPLIER> 1,000,000
       
<S>                                        <C>                     <C>                     <C>
<PERIOD-TYPE>                                     YEAR                    YEAR                    YEAR
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1996             DEC-31-1995
<PERIOD-END>                               DEC-31-1997             DEC-31-1996             DEC-31-1995
<CASH>                                             183                     121                      87
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                      279                     380                     339
<ALLOWANCES>                                         5                       5                       5
<INVENTORY>                                        172                     218                     221
<CURRENT-ASSETS>                                   689                     805                     764
<PP&E>                                            4602                    4837                    5767
<DEPRECIATION>                                    2604                    2889                    3557
<TOTAL-ASSETS>                                    3096                    3124                    3213
<CURRENT-LIABILITIES>                              523                     485                     575
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            54                      54                      54
<OTHER-SE>                                        1386                    1313                    1362
<TOTAL-LIABILITY-AND-EQUITY>                      3096                    3124                    3213
<SALES>                                           1711                    1931                    1754
<TOTAL-REVENUES>                                  1711                    1931                    1754
<CGS>                                              949                    1016                     960
<TOTAL-COSTS>                                     1524                    1740                    1852
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                  46                      52                      61
<INCOME-PRETAX>                                    277                     323                    (69)
<INCOME-TAX>                                        83                     103                    (45)
<INCOME-CONTINUING>                                194                     220                    (24)
<DISCONTINUED>                                       0                       0                     (7)
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                       194                     220                    (31)
<EPS-PRIMARY>                                     4.06                    4.45                   (.60)
<EPS-DILUTED>                                     4.04                    4.43                   (.60)
        


</TABLE>