<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
REGISTRANT'S UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS AS OF AND FOR MARCH 31,
1997, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000
       
                                        
<PERIOD-TYPE>                                    3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1997
<CASH>                                              32
<SECURITIES>                                         0
<RECEIVABLES>                                      314
<ALLOWANCES>                                        33
<INVENTORY>                                        232
<CURRENT-ASSETS>                                   608
<PP&E>                                           1,953
<DEPRECIATION>                                     985
<TOTAL-ASSETS>                                   2,191
<CURRENT-LIABILITIES>                              376
<BONDS>                                            229
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           214
<OTHER-SE>                                         567
<TOTAL-LIABILITY-AND-EQUITY>                     2,191
<SALES>                                            518
<TOTAL-REVENUES>                                   518
<CGS>                                              347
<TOTAL-COSTS>                                      347
<OTHER-EXPENSES>                                    97
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   6
<INCOME-PRETAX>                                     68
<INCOME-TAX>                                        23
<INCOME-CONTINUING>                                 46
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                        46
<EPS-PRIMARY>                                     1.10
<EPS-DILUTED>                                     1.10