
<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEET AT SEPTEMBER 30, 1998 (UNAUDITED) AND THE
CONDENSED CONSOLIDATED STATEMENT OF INCOME FOR THE NINE MONTHS ENDED SEPTEMBER
30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                           3,421
<SECURITIES>                                         0
<RECEIVABLES>                                   80,481<F1>
<ALLOWANCES>                                         0
<INVENTORY>                                     68,793
<CURRENT-ASSETS>                               160,013
<PP&E>                                         517,509
<DEPRECIATION>                                (197,381)
<TOTAL-ASSETS>                                 612,388
<CURRENT-LIABILITIES>                          107,593
<BONDS>                                        224,040<F2>
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,513
<OTHER-SE>                                     235,016
<TOTAL-LIABILITY-AND-EQUITY>                   612,388
<SALES>                                        555,061
<TOTAL-REVENUES>                               555,061
<CGS>                                          402,561
<TOTAL-COSTS>                                  402,561
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              11,983
<INCOME-PRETAX>                                 63,741
<INCOME-TAX>                                    23,846
<INCOME-CONTINUING>                             39,301
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    39,301
<EPS-PRIMARY>                                     1.55
<EPS-DILUTED>                                     1.54
<FN>
<F1>ARE PRESENTED NET OF THE ALLOWANCE FOR DOUBTFUL ACCOUNTS.
<F2>REPRESENT REVOLVING CREDIT LOANS AND LONG-TERM DEBT, LESS CURRENT MATURITIES.
</FN>
        

</TABLE>
