<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY INFORMATION EXTRACTED FROM THE CONSOLIDATED
BALANCE SHEET AND THE CONSOLIDATED STATEMENT OF INCOME FILED AS PART OF THE
ANNUAL REPORT ON FORM 10-K AND IS QUALIFIED IN ITS ENTIRETY BY SUCH ANNUAL
REPORT ON FORM 10-K.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                         $48,621
<SECURITIES>                                        $0
<RECEIVABLES>                                 $157,749
<ALLOWANCES>                                    $2,609
<INVENTORY>                                   $110,816
<CURRENT-ASSETS>                              $332,599
<PP&E>                                      $1,287,507
<DEPRECIATION>                                $392,122
<TOTAL-ASSETS>                                $954,094
<CURRENT-LIABILITIES>                         $131,353
<BONDS>                                             $0
<PREFERRED-MANDATORY>                               $0
<PREFERRED>                                         $0
<COMMON>                                          $462
<OTHER-SE>                                    $490,102
<TOTAL-LIABILITY-AND-EQUITY>                  $954,094
<SALES>                                       $845,925
<TOTAL-REVENUES>                              $845,925
<CGS>                                         $581,380
<TOTAL-COSTS>                                 $731,799
<OTHER-EXPENSES>                                    $0
<LOSS-PROVISION>                                    $0
<INTEREST-EXPENSE>                              $8,379
<INCOME-PRETAX>                               $128,738
<INCOME-TAX>                                   $39,909
<INCOME-CONTINUING>                            $88,829
<DISCONTINUED>                                      $0
<EXTRAORDINARY>                                     $0
<CHANGES>                                           $0
<NET-INCOME>                                   $88,829
<EPS-BASIC>                                      $1.89
<EPS-DILUTED>                                    $1.87