<ARTICLE> 5

                                                  
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          NOV-30-1999             NOV-30-1998
<PERIOD-END>                               MAY-31-1999             MAY-31-1998
<CASH>                                          12,133                   6,078
<SECURITIES>                                         0                       0
<RECEIVABLES>                                  132,144                 129,258
<ALLOWANCES>                                         0                       0
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<CURRENT-ASSETS>                               265,836                 274,353
<PP&E>                                         150,760                 161,288
<DEPRECIATION>                                       0                       0
<TOTAL-ASSETS>                                 485,580                 498,013
<CURRENT-LIABILITIES>                          116,552                 101,907
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        13,007                  12,969
<OTHER-SE>                                     153,429                 138,393
<TOTAL-LIABILITY-AND-EQUITY>                   485,580                 498,013
<SALES>                                        272,367                 239,500
<TOTAL-REVENUES>                               272,367                 239,500
<CGS>                                          201,927                 178,972
<TOTAL-COSTS>                                        0                       0
<OTHER-EXPENSES>                                59,303                  54,644
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               7,025                   6,058
<INCOME-PRETAX>                                 10,329                   5,461
<INCOME-TAX>                                     3,305                   1,911
<INCOME-CONTINUING>                              7,024                   3,550
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     7,024                   3,550
<EPS-BASIC>                                     1.75                    0.89
<EPS-DILUTED>                                     1.75                    0.86