<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          NOV-30-1995
<PERIOD-END>                               MAY-31-1996
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<SECURITIES>                                     7,600
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<ALLOWANCES>                                         0
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<PP&E>                                       1,095,800
<DEPRECIATION>                                 679,500
<TOTAL-ASSETS>                               1,290,600
<CURRENT-LIABILITIES>                          307,800
<BONDS>                                        115,000
<COMMON>                                         3,300
<PREFERRED-MANDATORY>                                0
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<TOTAL-REVENUES>                               746,300
<CGS>                                          619,300
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<OTHER-EXPENSES>                               (3,200)
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<INCOME-TAX>                                       800
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<NET-INCOME>                                     2,400
<EPS-PRIMARY>                                      .07
<EPS-DILUTED>                                      .07