<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
company's consolidated Balance Sheet and Profit & Loss financial statements and
is qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                          10,974
<SECURITIES>                                         0
<RECEIVABLES>                                  353,317
<ALLOWANCES>                                     7,318
<INVENTORY>                                    425,182
<CURRENT-ASSETS>                               838,071
<PP&E>                                       2,522,482
<DEPRECIATION>                               1,400,936
<TOTAL-ASSETS>                               2,157,576
<CURRENT-LIABILITIES>                          592,052
<BONDS>                                        142,806
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       312,048
<OTHER-SE>                                     630,704
<TOTAL-LIABILITY-AND-EQUITY>                 2,157,576
<SALES>                                        640,584
<TOTAL-REVENUES>                               640,584
<CGS>                                          487,372
<TOTAL-COSTS>                                  487,372
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               5,465
<INCOME-PRETAX>                                 66,992
<INCOME-TAX>                                    25,926
<INCOME-CONTINUING>                             41,066
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    41,066
<EPS-PRIMARY>                                     1.32
<EPS-DILUTED>                                     1.30