US Coast Guard
General Electric Company
The Home Depot
Hoyle, Tanner and Associates, Inc.
Symmes, Maini and Mckee, Inc.
Wheelabrator Environmental Systems, Inc.
Lockheed/Sanders, Inc.
City of Nashua, New Hampshire
Boise-Cascade Corporation
City of Portsmouth, New Hampshire
St. Joseph's Hospital
Parsons, Brinckerhoff, Quade and Douglas
Fay, Spofford and Thorndike, Inc.
Us Navy
Union Mutual Life Insurance Co.
Purity Supreme
MA Dept. of Public Works
Central Maine Power Company
Mobil Oil Corporation
Public Service of New Hampshire
Harvey Construction Company, Inc.
Perini Corporation
Rust Engineering Company
Tamboni Corporation
International Paper Company
W. R. Grace and Company
Cianbro Corporation
GTE Sylvania
Turner Construction Company Inc.
United States Army Corps of Engineers
US Postal Service		   Federal Aeronautics Administration
Spaulding and Slye Construction Co. , Inc.
New Hampshire Department of Public Works
City of Manchester, New Hampshire
Harvard University
City of Worcester, Massachusetts
Worcester Memorial Hospital
Anheuser-Busch, Inc.
Banc One
Elliot Hospital
Bank of New Hampshire
Franklin Pierce College
St. Paul's Prep School
Cornerstone Bank
Toys R Us
Genetics Institute
United Parcel Service
Stratus Computor
United Waste Systems
Federal Deposit Insurance Corp.
First National Bank of Boston
Hechinger Corporation
Maine DEP
Pulte Home Corporation
Massachusetts DEP
Toll Brothers
Heery International
New Hampshire DES
Camp, Dresser and Mckee, Inc.
Digital Equipment Corportation