<ARTICLE>                     5
<LEGEND>
This schedule contains summary financial information extracted from the
Financial Statements contained in Item 1 of Form 10-Q for the period ended March
31, 2000 and is qualified in its entirety by reference to such financial
statements. Figures are rounded to the nearest 100,000 (except EPS).
</LEGEND>
<MULTIPLIER>                                   1,000

                             
<PERIOD-TYPE>                  3-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-START>                                 JAN-01-2000
<PERIOD-END>                                   MAR-31-2000
<CASH>                                              5,500
<SECURITIES>                                       25,000
<RECEIVABLES>                                     227,000
<ALLOWANCES>                                            0
<INVENTORY>                                       215,600
<CURRENT-ASSETS>                                  522,800
<PP&E>                                          1,608,500
<DEPRECIATION>                                 (1,145,500)
<TOTAL-ASSETS>                                  1,074,000
<CURRENT-LIABILITIES>                             249,700
<BONDS>                                           228,700
<PREFERRED-MANDATORY>                                   0
<PREFERRED>                                             0
<COMMON>                                           45,100
<OTHER-SE>                                        274,900
<TOTAL-LIABILITY-AND-EQUITY>                    1,074,000
<SALES>                                           362,400
<TOTAL-REVENUES>                                  362,400
<CGS>                                             298,300
<TOTAL-COSTS>                                     298,300
<OTHER-EXPENSES>                                        0
<LOSS-PROVISION>                                        0
<INTEREST-EXPENSE>                                  3,900
<INCOME-PRETAX>                                    31,200
<INCOME-TAX>                                       11,900
<INCOME-CONTINUING>                                19,300
<DISCONTINUED>                                          0
<EXTRAORDINARY>                                         0
<CHANGES>                                               0
<NET-INCOME>                                       19,300
<EPS-BASIC>                                          0.43
<EPS-DILUTED>                                        0.43