BP Business Units -- Texas City, Texas - Whiting, IN - Carson, CA - Rotterdam, Netherlands
ConocoPhillips -- Humber, UK
Countrymark Refining -- Mount Vernon, IN
Delek Refining -- Tyler, Texas
Exelon -- Peach Bottom, PA, Dresden, VA, Quad Cities, IL
Indian Oil Company -- Orissa, Paradip, India
Jacobs Engineering -- Houston and Netherlands
KiOR Inc. -- Pasadena, Texas
Koch Nitrogen -- Fort Dodge, IA, Enid, OK, and Dodge City, KS
Murphy Oil -- Meraux, LA
Oman Refining Company -- Sohar, Oman
PCS Nitrogen -- Augusta, GA
RBF Port Neches, LLC -- Houston, TX
Reliance Industries -- Jamnagar, India
Sunoco Refinery -- Toledo, OH
Vertex Energy -- Baytown, TX
Valero Refining -- Ardmore, McKee, Houston and Texas City