Aerospace
Allied Signal
Boeing Commercial Airplanes
NASA
Raytheon

Airlines
American Eagle
Qantas
United

Automotive
DaimlerChrysler
Ford Brazil
General Motors

Chemicals
Braskem SA
PQ Corporation
Ranbaxy

Education
University of Washington

Energy
Diamond Offshore
Exxon Mobil
Helmerich and Payne Drilling
Nabors Drilling
PCK Raffinerie GmbH
PDVSA
PEMEX
Petrobras
South China Blue Sky Aviation Fuel Ltds
Tosco Refinerie

Food Processing
Bestfoods

Healthcare
Hunter Health

Forest Products/Paper
Fraser Papers
Georgia-Pacific
Smurfit-Stone Container

Metals Manufacturing
Alcoa
BlueScope Steel Limited
Tata Steel

Mining/Non-Metallic Minerals
Rio Tinto
Rogers Group
Samarco SA

Retail
Bunnings
Sonae Sierra
Wawa, Inc.

Surface Transportation
Amtrak
Burlington Northern Santa Fe Railway
Los Angeles County MTA
New York MTA
Railtrack UK
Swiss Rail
Yellow Transportation

Utilities
Commonwealth Edison
Michigan Consolidated Gas

U.S. Government
Department of Energy
Lawrence Livermore National Labs
National Park Service
U.S. Postal Service