Power Generation:
A/C Power-Colver Operations
AECI Electric Co-Op
AES - Huntington Beach
AES - Lebanon
AES - Red Oak
AES-Somerset
Pinetree Power-Bethlehem, Inc
Pinetree Power-Fitchburg, Inc
Revere Energy Corporation
Ryegate Associates
Pinetree Power-Tamworth, Inc

Packaging:
AET
Bemis
Flexcon
Rock-Tenn Company

Metal Products:
GGB
Ahresty
Hydro Aluminum
Metallurg Vanadium
Mittal Steel
Novelis
Nucor Steel
Precision Strip
Roanoke Steel

Plastics:
Ball Corp.
Bemis
Honeywell Films
Spartech
Trienda

Municipalities:
City of Santa Cruz PWD
Lake Elsinore Valley MWD
Metro Water of Southern California

Petroleum:
Citizens Gas
OPW
Oxy

Food and Beverage:
Bimbo Bakeries
Birds Eye
Cargill Meat Solutions
Carneco
Fairmont Foods
Frito-Lay, Inc.
Kerry Ingredients
Ralcorp
Gold Medal Bakery

Pharmaceutical/Medical:
Adhesives Research
Medtronic
Nektar
Siemens
Tyco
Wyeth

Aerospace:
Honeywell
Pratt & Whitney
Lockheed Martin

Universities:
Cal State - Los Angeles
Cal State - Poly SLO
Cal State - Sacramento

Other Industry:
AMPAD
Bandag
Binney & Smith
Caterpillar
Dial
EMP
Federal Mogul
Harford Duracool
Hills Pet Nutrition
Indigo
Jostens
Kirby Risk
Klein Tools
Knauf
Kolpak
Kone
Lafarge
Manchester Tank
McCall - Parsons
Meridian Auto
Metallurg Vanadium
Nachi Robotics
Owens Corning Asphalt
Owens Corning Roofing
Philip Morris
Pilkington
Rockwell Automation
Specialty Minerals
Spencer Turbine
Sprecher & Schuh
Trelleborg
Weir Minerals