<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
SEPTEMBER 30, 1999 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>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          36,400
<SECURITIES>                                    20,000
<RECEIVABLES>                                  236,300
<ALLOWANCES>                                         0
<INVENTORY>                                    196,800
<CURRENT-ASSETS>                               509,300
<PP&E>                                       1,598,600
<DEPRECIATION>                             (1,136,800)
<TOTAL-ASSETS>                               1,032,700
<CURRENT-LIABILITIES>                          261,800
<BONDS>                                        229,200
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        45,100
<OTHER-SE>                                     278,900
<TOTAL-LIABILITY-AND-EQUITY>                 1,032,700
<SALES>                                        973,700
<TOTAL-REVENUES>                               973,700
<CGS>                                          843,900
<TOTAL-COSTS>                                  843,900
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              12,100
<INCOME-PRETAX>                                 11,700
<INCOME-TAX>                                     4,700
<INCOME-CONTINUING>                              7,000
<DISCONTINUED>                                   4,400
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    11,400
<EPS-BASIC>                                       0.25
<EPS-DILUTED>                                     0.25