<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Condensed Balance Sheet as of September 30, 2000 (unaudited) and
the Consolidated Condensed Statement of Operations for the nine months ended
September 30, 2000 (unaudited), of GTS Duratek, Inc. and Subsidiaries, and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 454,790
<SECURITIES> 0
<RECEIVABLES> 53,586,043
<ALLOWANCES> (870,246)
<INVENTORY> 2,286,854
<CURRENT-ASSETS> 104,054,338
<PP&E> 148,438,250
<DEPRECIATION> (63,810,160)
<TOTAL-ASSETS> 286,046,325
<CURRENT-LIABILITIES> 86,831,015
<BONDS> 0
15,684,339
0
<COMMON> 148,238
<OTHER-SE> 68,888,958
<TOTAL-LIABILITY-AND-EQUITY> 286,046,325
<SALES> 0
<TOTAL-REVENUES> 167,730,117
<CGS> 0
<TOTAL-COSTS> 123,044,768
<OTHER-EXPENSES> 26,081,490
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 5,039,957
<INCOME-PRETAX> 14,729,902
<INCOME-TAX> 5,840,015
<INCOME-CONTINUING> 8,889,887
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 8,777,387
<EPS-BASIC> 0.57
<EPS-DILUTED> 0.45
</TABLE>
