State of Alaska DOT/PF
Alabama Gas Corporation
Alabama Power Company
Anadarko Petroleum
Anker Energy Corporation
Arco Coal
Arkansas Power & Light
Atlanta Committee for the Olympic Games
Bay-Lake Regional Planning Commission
BC Rail
BC Dept. of Highways & Transportation
BKW Eagleton Engineering Company
Black & Veatch
Boulder County Public Works Dept.
Boyd Brown Stude & Cambern
Brown & Caldwell
Bureau of Land Management
Camp Dresser & McKee
Cardinal River Coals Ltd.
Cargill Fertilizer
Cascade Controls
Centennial Engineering
Charlotte/Douglas International Airport
City of Boulder
City of Burbank
City of Coeur D'Alene
City of Santa Fe
City of Stillwater
City of Vacaville
Clorox Company
CNG Transmission Corp.
Coastal Oil & Gas
Collier County Planning Dept.
Computer Sciences Corp.
Consoer,Townsend & Assoc.,Inc.
Consolidated Edison
County of San Luis Obispo
County of Santa Barbara
County of York, Virginia
Crawford Murphy & Tilly
Cumberland Valley Area Dev. District
Cuyahoga County Engineer
Dames & Moore
Delaware Division of Parks & Recreation
Delta Airport Consultants
Disney World
Dona Ana County
Dow Jones & Company
East Alabama Regulatory Planning Commission
Earth Sciences Resource Inst.
Easton Utilities Commission
Echo Bay Exploration
Edge Petroleum
EMCON Northwest
Engineering Science, Inc.
ENSR Consulting & Engineering
Falkirk Mining Company
Farrell-Cooper Mining
Florida Power & Light
FMC Gold Corp.
Friant Water Users Authority
G and E Engineering Inc
Getchell Gold
Gosling Czubak Assoc.
HDR Engineering
Hecla Mining Company
Humana Corp.
Hydro-Quebec, E.E.T.
Idaho State Univ./Geology Dept.
Inco Exploration
IT Corp
Jacksonville Naval Air Station
Johnson County Public Works
Land O'Lakes
Lower Colorado River Authority
Lufkin-Conroe Telephone Exchange
Maryland National Capital Park & Planning Commission
Massachusetts Water Resource Authority
Micron Tech. Inc.
Mika Map Company
Minnesota Dept of Natural Resources
Morton International
Municipality of Monroeville

NAHB Research Center
NASA Lewis Research Center
National Fuel Gas
National Park Service
Natural Resources Consulting Engineers
Navy Public Works Center
Nevada County Dept. of Sanitation
Newmont Exploration
Newmont Gold Company
Nez Perce National Forest
North Mining & Exploration
Nucor Steel
Oak Lodge Sanitary Dist.
OHM Remediation Services
Oliver Mangioni McCalla
Optical Coating Laboratory
Original 16 to 1 Mine, Inc.
Orlando Housing Authority
Oxford University
Panama Canal Commission
Parker Amchem
Petrolera Argentina San Jorge
Photographic Sciences
Port Authority of New York
Port of Oakland
Portsmouth Naval Shipyard
PRC Environmental
Puget Sound Naval Shipyard
Raytheon Services Nevada
Rocky Mountain National Park
Saginaw County Road Commission
Sandia National LAboratory
Seeger Map Company
Seminole County
Simplex Time Recorder Company
Southern Illinois Power Coop
Southern Pacific Lines
St. Louis County Public Works
State Electricity Commission. Australia
State of California , Dept. of Water Resources
Sunflower Electric Power Corp.
Tetra-Tech EMI
The Amalgamated Sugar Company
UNC Charlotte Physical Plant
Uniroyal Chemical Ltd.
United Foods/Pictsweet Frozen Foods
University of Alaska Fairbanks
University of Memphis
University of Nebraska-Lincoln
University of Northern Iowa
University of Tennessee/Knoxville
US Air Force FE Warren AFB
US Air Force Grand Forks AFB
US Coast Guard
US Fish & Wildlife
US Geological Survey
US Naval Supply Center
USDA Clearwater National Forest
USDA Nebraska National Forest
USDA Modoc National Forest
USDA Mt Hood National Forest
USDA Fremont National Forest
USDA Gallatin National Forest
USDA Gifford Pinchot National Forest
USDA Idaho Panhandle National Forest
USDA Lassen National Forest
USDA Plumus National Forest
USDA Siuslaw National Forest
USDA Superior Forest Service
USDA Umpqua National Forest
USDA Winema National Forest
USDI Bureau of Land Management
USDI, Office of Surface Mining
USG Interiors
Warzyn Inc.
Washington Gas & Light
Weimer Irrigation & Supply
Western Fuels
Woodward Clyde Consultants
Yosemite Nat'l Park Archaeology
Yukon Territorial Government