<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
REMEDIATION INC.'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED SEPTEMBER
27, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          APR-04-1998
<PERIOD-END>                               SEP-27-1997
<CASH>                                           1,047
<SECURITIES>                                     4,084
<RECEIVABLES>                                   27,973
<ALLOWANCES>                                     1,521
<INVENTORY>                                          0
<CURRENT-ASSETS>                                50,388
<PP&E>                                          54,694
<DEPRECIATION>                                  18,304
<TOTAL-ASSETS>                                 135,881
<CURRENT-LIABILITIES>                           16,569
<BONDS>                                         37,950
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           139
<OTHER-SE>                                      75,538
<TOTAL-LIABILITY-AND-EQUITY>                    75,677
<SALES>                                              0
<TOTAL-REVENUES>                                61,843
<CGS>                                                0
<TOTAL-COSTS>                                   52,198
<OTHER-EXPENSES>                                   435
<LOSS-PROVISION>                                    31
<INTEREST-EXPENSE>                               1,107
<INCOME-PRETAX>                                  2,364
<INCOME-TAX>                                     1,092
<INCOME-CONTINUING>                              1,272
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,272
<EPS-PRIMARY>                                      .10
<EPS-DILUTED>                                        0