<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEET AS OF MARCH 31, 2000 AND THE RELATED
CONDENSED CONSOLIDATED STATEMENT OF EARNINGS FOR THE THREE MONTHS ENDED MARCH
31, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH QUARTERLY REPORT
ON FORM 10-Q FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2000.
</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>                                               0
<SECURITIES>                                         0
<RECEIVABLES>                                  194,152
<ALLOWANCES>                                     4,749
<INVENTORY>                                    186,924
<CURRENT-ASSETS>                               411,841
<PP&E>                                       1,686,660
<DEPRECIATION>                                 827,807
<TOTAL-ASSETS>                               1,766,405
<CURRENT-LIABILITIES>                          204,834
<BONDS>                                        601,654
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           467
<OTHER-SE>                                     775,424
<TOTAL-LIABILITY-AND-EQUITY>                   775,891
<SALES>                                        276,131
<TOTAL-REVENUES>                               276,131
<CGS>                                          231,773
<TOTAL-COSTS>                                  255,985
<OTHER-EXPENSES>                                (1,369)
<LOSS-PROVISION>                                    23
<INTEREST-EXPENSE>                              10,169
<INCOME-PRETAX>                                 11,323
<INCOME-TAX>                                     3,993
<INCOME-CONTINUING>                              7,330
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,330
<EPS-BASIC>                                       0.16
<EPS-DILUTED>                                     0.16