<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the Form
10-Q and is qualified in its entirety by reference to such Form 10-Q.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          OCT-31-1997
<PERIOD-END>                               APR-30-1997
<CASH>                                          19,068
<SECURITIES>                                    15,691
<RECEIVABLES>                                   69,289
<ALLOWANCES>                                     (828)
<INVENTORY>                                     52,469
<CURRENT-ASSETS>                               172,343
<PP&E>                                         588,510
<DEPRECIATION>                               (256,526)
<TOTAL-ASSETS>                                 529,751
<CURRENT-LIABILITIES>                           53,921
<BONDS>                                         39,609
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         9,034
<OTHER-SE>                                     387,734
<TOTAL-LIABILITY-AND-EQUITY>                   529,751
<SALES>                                        304,899
<TOTAL-REVENUES>                               315,612
<CGS>                                          266,250
<TOTAL-COSTS>                                  266,250
<OTHER-EXPENSES>                                35,024
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,673
<INCOME-PRETAX>                                 12,665
<INCOME-TAX>                                     4,600
<INCOME-CONTINUING>                              8,065
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,065
<EPS-PRIMARY>                                     0.26<F1>
<EPS-DILUTED>                                     0.26<F1>
<FN>
<F1>Amount represents the earnings per share for the Class A Common Stock.  The
earnings per share for the Class B Common Stock are $0.43.
</FN>