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                                                                      EXHIBIT 21

                      SUBSIDIARIES OF BRACKNELL CORPORATION



       SUBSIDIARY                             JURISDICTION
       ----------                             ------------
                                           
The State Group Limited                          Ontario
Nationwide Electric, Inc.                        Delaware
The State Services Group Limited                 Ontario
The State Group International Limited            Michigan
The State Group (USA) Limited                    Delaware
Preferred Electric, Inc.                         Illinois
Preferred Electric Construction Corp.            Illinois
Bracknell Telecommunication                      Ontario
Services Inc.
Parsons Electric Holdings Inc.                   Delaware
Parsons Electric Co.                            Minnesota
Eagle Electric Holdings, Inc.                   Minnesota
Eagle Electric Holdings, Inc.                    Delaware
Eagle Electrical Systems, Inc.                     Ohio
Southwest Systems Limited                         Nevada
Allison-Smith Company                            Georgia
Henderson Electric Co. Inc.                      Delaware
Neal Electric, Inc.                             California
Neal Equipment, LLC                             California
354709 Alberta Ltd.                              Alberta
334108 Alberta Ltd.                              Alberta
Cahill-State Atlantic Ltd.                     Newfoundland
Sylvan Industrial Piping, Inc.                   Michigan
Sylvan Industrial Piping of N.J.,               New Jersey
Inc.
Sylvan Industrial Piping of                     Tennessee
Tennessee, Inc.
Highlight Construction Ltd.                      Alberta
Vista Communication Technologies Ltd.            Alberta


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Highlight Antenna Services Ltd.              British Columbia
Highlight Antenna & Tower Services             Saskatchewan
Ltd.
Highlight Solutions, Inc.                        Delaware
Highlight Towers Ontario Ltd.                    Ontario
Sunbelt Integrated Trade Services,               Delaware
Inc.
Quality Mechanical Contractors, Inc.              Nevada
Inglett & Stubbs, Inc.                           Georgia
Crouch Electric, Inc.                             Texas
Pneu-Temp, Inc.                                   Texas
Crouch Industries LLC                             Texas
Schmidt Electric Company, Inc.                    Texas
Bracknell Facilities                             Delaware
Services Inc.
1406883 Ontario Limited                          Ontario
3041768 Nova Scotia Company                    Nova Scotia
Bracknell B (Wyoming) LLC                        Wyoming
Bracknell A (Wyoming) LLC                        Wyoming