<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S BALANCE SHEET AND STATEMENT OF INCOME FOR THE THREE MONTHS ENDED
MARCH 31, 1997 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-START>                              JAN-1-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                          33,934
<SECURITIES>                                         0
<RECEIVABLES>                                  308,532
<ALLOWANCES>                                     5,447
<INVENTORY>                                    188,891
<CURRENT-ASSETS>                               543,836
<PP&E>                                       1,316,953
<DEPRECIATION>                                 469,728
<TOTAL-ASSETS>                               1,460,864
<CURRENT-LIABILITIES>                          243,663
<BONDS>                                        223,305
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        78,678
<OTHER-SE>                                     672,276
<TOTAL-LIABILITY-AND-EQUITY>                 1,460,864
<SALES>                                        379,532
<TOTAL-REVENUES>                               379,786
<CGS>                                          315,913
<TOTAL-COSTS>                                  315,913
<OTHER-EXPENSES>                                21,512
<LOSS-PROVISION>                                   300
<INTEREST-EXPENSE>                               1,691
<INCOME-PRETAX>                                 40,370
<INCOME-TAX>                                    15,220
<INCOME-CONTINUING>                             25,150
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    25,150
<EPS-PRIMARY>                                      .31
<EPS-DILUTED>                                      .31