<ARTICLE>           5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THERMO TERRATECH INC.'S
QUARTERLY REPORT ON FORM 10-Q FOR THE PERIOD ENDED JULY 1, 2000
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER>        1,000

                              
<PERIOD-TYPE>                                       3-MOS
<FISCAL-YEAR-END>                             MAR-31-2001
<PERIOD-END>                                  JUL-01-2000
<CASH>                                              4,129
<SECURITIES>                                            0
<RECEIVABLES>                                      53,510
<ALLOWANCES>                                        2,236
<INVENTORY>                                         1,175
<CURRENT-ASSETS>                                  121,952
<PP&E>                                            112,473
<DEPRECIATION>                                     49,855
<TOTAL-ASSETS>                                    274,017
<CURRENT-LIABILITIES>                              76,192
<BONDS>                                           116,469
<PREFERRED-MANDATORY>                                   0
<PREFERRED>                                             0
<COMMON>                                            1,968
<OTHER-SE>                                         48,993
<TOTAL-LIABILITY-AND-EQUITY>                      274,017
<SALES>                                                 0
<TOTAL-REVENUES>                                   73,099
<CGS>                                                   0
<TOTAL-COSTS>                                      57,710
<OTHER-EXPENSES>                                      (98)
<LOSS-PROVISION>                                        6
<INTEREST-EXPENSE>                                  2,031
<INCOME-PRETAX>                                     3,610
<INCOME-TAX>                                        4,285
<INCOME-CONTINUING>                                (1,049)
<DISCONTINUED>                                          0
<EXTRAORDINARY>                                         0
<CHANGES>                                               0
<NET-INCOME>                                       (1,049)
<EPS-BASIC>                                        (.06)
<EPS-DILUTED>                                        (.06)