
<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AT MARCH 31, 1997 AND THE CONSOLIDATED STATEMENT 
OF INCOME FOR THE THREE MONTHS ENDED MARCH 31, 1997 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                          15,635
<SECURITIES>                                         0
<RECEIVABLES>                                   65,110<F1>
<ALLOWANCES>                                         0
<INVENTORY>                                     46,170
<CURRENT-ASSETS>                               131,982
<PP&E>                                         419,373
<DEPRECIATION>                                 152,745
<TOTAL-ASSETS>                                 495,787
<CURRENT-LIABILITIES>                           74,582
<BONDS>                                        205,458<F2>
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,482
<OTHER-SE>                                     164,220
<TOTAL-LIABILITY-AND-EQUITY>                   495,787
<SALES>                                        157,583
<TOTAL-REVENUES>                               157,583
<CGS>                                          113,763
<TOTAL-COSTS>                                  113,763
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               3,255
<INCOME-PRETAX>                                 19,682
<INCOME-TAX>                                     7,579
<INCOME-CONTINUING>                             11,741
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    11,741
<EPS-PRIMARY>                                     0.47
<EPS-DILUTED>                                     0.47
<FN>
<F1>(RECEIVABLES) ARE PRESENTED NET OF THE ALLOWANCE FOR DOUBTFUL ACCOUNTS.
<F2>(BONDS) REPRESENT LONG-TERM DEBT, LESS CURRENT MATURITIES, AND
REVOLVING CREDIT LOANS. 
</FN>
        

</TABLE>
