EXHIBIT 21 AMERICAN ECO CORPORATION SUBSIDIARIES(1) ------------------------ JURISDICTION OF NAME INCORPORATION -------------------------------------- --------------- The Turner Group Delaware C.A. Turner Construction Company Delaware C.A. Turner Maintenance Inc. Texas Action Contract Services Inc. Delaware H.E. Co. Services, Inc. Texas MM Industra, Limited Nova Scotia Industra Service Corporation British Columbia Industra Thermal Service Corporation British Columbia, Alberta Industra Engineers & Consultants, British Columbia Inc. NUS, Inc. (Holding Company USA) Washington Industra Thermal Service Corp. Washington Industra Service Corp. Washington Industra, Inc. Washington Separation and Recovery Systems Inc. Nevada United Eco Systems, Inc. Delaware ENSCI Environmental, Inc. Delaware Lake Charles Construction Company Louisiana Cambridge Construction Service Corp. Nevada Chempower, Inc. Ohio Global Power Company Ohio Brookfield Corporation Ohio Southwick Corporation Ohio Controlled Power Limited Partnership Illinois Specialty Management Group, Inc., Texas d//b/a/ CCG _______________ (1) Inactive subsidiaries are not included