<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEET AS OF SEPTEMBER 30, 1996 AND CONSOLIDATED STATEMENT
OF INCOME FOR THE NINE MONTHS THEN ENDED AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               SEP-30-1996
<CASH>                                           3,920
<SECURITIES>                                         0
<RECEIVABLES>                                   85,104
<ALLOWANCES>                                         0
<INVENTORY>                                     46,502
<CURRENT-ASSETS>                               148,164
<PP&E>                                         489,379
<DEPRECIATION>                                 284,313
<TOTAL-ASSETS>                                 373,680
<CURRENT-LIABILITIES>                           87,714
<BONDS>                                        106,208
<COMMON>                                        10,118
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                     19,924
<OTHER-SE>                                     101,972
<TOTAL-LIABILITY-AND-EQUITY>                   373,680
<SALES>                                        406,491
<TOTAL-REVENUES>                               406,491
<CGS>                                          334,267
<TOTAL-COSTS>                                  375,724
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               5,362
<INCOME-PRETAX>                                 25,405
<INCOME-TAX>                                    10,395
<INCOME-CONTINUING>                             15,010
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    15,010
<EPS-PRIMARY>                                     1.42
<EPS-DILUTED>                                     1.35