- Acme Brick Company
- Air Liquide America L.P.
- Anadarko Petroleum Corp.
- Anheuser-Busch InBev
- Arkema, Inc.
- Ball Metal Corporation
- Bayer Corporation
- Ben E. Keith Foods
- BHP Billiton Petroleum (Americas) Inc.
- Brookfield Properties
- Borden, Inc.
- Cameron Drilling Systems
- Carrier Corp.
- Chevron-Texaco
- Crown Cork and Seal
- DOW – Rohm and Haas
- DuPont-First Chemical
- Entergy Solutions LLC
- Exxon-Mobil
- Goodman Manufacturing Co.
- Goodyear Tire & Rubber Co.
- Graham Packaging
- Grocers Supply
- Gulf Copper Marine
- Harris County
- Hines Interests
- City of Houston
- Hunton Trane Group
- Helix ESG
- Johnson Controls-York
- Keppel Amfels Inc.
- Lange Mechanical
- Louisiana Pacific Corp.
- National Instruments Corp.
- Norbord, Inc.
- Pilgrim’s Pride
- Port of Houston Authority
- Rolls-Royce Commercial Marine, Inc.
- Siemens Building Technology
- Spoetzl Shiner Brewery
- SPX Cooling Technologies
- Tenaska Energy
- Texas A&M University
- Texas Children’s Hospital
- The University of Houston
- The University of Texas
- UT MD Anderson
