3M 
Alabama Great Southern Railway Company 
Alcoa 
ANG Coal Gasification Co.

ANG Power Company 

Baker Concrete Services
Busch Entertainment Group
Army Corps of Engineers
Avatar Properties
Baldwin Park Development
Basin Electric Power Coop. 
Bechtel 

Beers/ Skansa Construction Company
Bethlehem Steel Corp. 
Black & Veatch 
Boise Cascade Corp. 
Burlington Northern/Santa Fe Railroad Co. 
Canadian Harvest , USA

Canadian National / Illinois Central Railroad 
Cargill Fertilizer, Inc. 
Carlson Properties, Inc. 

City of Clearwater

City of Minneapolis. MN

City of Orlando

City of Plant City

City of Port St. Lucie

City of Sanford

City of St Paul. Mn

City of Treasure Island
Cityplace Development Corp. 
Dairyland Power Coop. 

Dallas Fort Worth Airport Authority
Detroit Edison 
Disney - Florida 
Duluth and Northeast Railroad Co. 
Duluth, Missabe & Iron Range Railroad Co. 

Florida Department of Transportation (FDOT)
Florida Power and Light Corp. 

Florida Rock

Florida’s Turnpike Authority
Ginn Companies and Resorts

Ginn Development Companies
Give Kids the World

Greater Lafourche Port Commission

Greater New Orleans Expressway Authority

Greater Orlando Airport Authority
Hardin Construction Company
Hensel Phelps Construction Company

Hillsborough County

Hillsborough Tampa Expressway Authority

IC RailMarine Corp.

IMC Fertilizer, Inc. 
IMC-Agrico Co. 

Illinois Central Railroad

Illinois DOT 

Infrastrucsture Corporation of America  
Inland Steel Mining Co. 
International Marine Terminals 
Interstate Power Co.  

IPSCO Steel, Inc. 

Kansas City Southern Railroad
Krupp International 

Lake Charles La. Harbor & Terminal Commission 

Lake Pontchartrain Port Commission

Louisiana Power & Light Co. 

LA. DOTD  

Landmar Development Corporation 

Mannsmemann Demag Corporation
McKee, Arhur G. and Co. 

Minneapolis Airport Commission
Minn. Power & Light Co. 

Minnesota Mining and Manufacturing
Minnkota Power Coop., Inc. 
Mississippi DOTD  

Morgan Construction Company 

MN DOT 

MS DOT 

Muscatine Power and Water 

Natchez- Adams County Port Authority
National Steel Pellet Co. 
Nekoosa Papers 
Norfolk Southern Railway 
Northern States Power Co. 
Northwestern Bell Telephone Co.   

Obayahsi Construction Company
Olin Corp.   

Orange County  

Orlando Orange County Expressway 

Orange County Public Works 

Orange County Utilities 
ORBA Corp.  

Osceola County 

Orba Johnson Transshipment Corporation 

Orleans Levee Board Orleans Parish
Parson Brinkerhouse
PBS & J Engineers 

Pinellas County 

PCL Construction Services
Platte River Power Authority 

Port of Chalmette La. 

Port of Morgan City, La 

Port of New Orleans. La.
Progress Energy
Rapidan Redevelopment   

Reedy Creek Improvement District
Republic Steel Corp.  

Six Flags Amusement Parks
Sea World of Florida 

Seminole County  

Seminole Gaming Development Company 

Soo Line and Canadian National Railroad 

Southwest Airlines 

St. Bernard La. Port Authority
St. Lawrence Cement, Inc. 
Stanley Consultants, Inc. 
Tampa Electric Co. 

The Celebration Company
The Center Companies 
The Travelers Insurance Companies 
Townsend & Bottum, Inc. 
TransAmerican Refining Corp. 
Trico Steel Corp.  

Turner Construction Company 

Trinity River Authority
Union-Pacific/Southern Pacific Railroad 
United Power Association 
United States Steel Corp. 
Universal City Property Management
Universal Studios, Florida 

Whiting Turner Construction Company