<ARTICLE>       5
<LEGEND>        THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
                FROM FINANCIAL STATEMENTS AS OF MARCH 31, 1998 AND IS QUALIFIED
                IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS
<MULTIPLIER>    1,000,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                              25
<SECURITIES>                                         0
<RECEIVABLES>                                      755
<ALLOWANCES>                                        13
<INVENTORY>                                        469
<CURRENT-ASSETS>                                 1,547
<PP&E>                                           4,397
<DEPRECIATION>                                   2,468
<TOTAL-ASSETS>                                   3,908
<CURRENT-LIABILITIES>                              853
<BONDS>                                            514
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                        123
<COMMON>                                           197
<OTHER-SE>                                       1,542
<TOTAL-LIABILITY-AND-EQUITY>                     3,908
<SALES>                                            937
<TOTAL-REVENUES>                                   937
<CGS>                                              564
<TOTAL-COSTS>                                      564
<OTHER-EXPENSES>                                   202
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  10
<INCOME-PRETAX>                                    166
<INCOME-TAX>                                        57
<INCOME-CONTINUING>                                109
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       109
<EPS-PRIMARY>                                     1.76
<EPS-DILUTED>                                     1.73