• Arkema, Inc.
  

• Evonik Corporation
  

• Wacker Chemical Corporation​
  

• U.S. Army Corp of Engineers
  

• H.B. Fuller Company
  

• DTE Calvert City, LLC
  

• Dynegy
  

• American Municipal Power
  

• Ashland/ISP Chemicals, LLC
  

• Department of Energy​
  

• Tenneesee Valley Authority

• Federal Materials