Members
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Suncor Energy Inc.
Top Canadian oil sands producer
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Member
Kansas Department of Health & Environment
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Member
Sinclair Oil Corporation
Gas stations and convenience stores in the U.S. West and Midwest
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Member
Shell Oil Company
US affiliate of Royal Dutch Shell plc
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Member*
Environmental Resources Management
Environmental impact consultancy
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Member
Phillips 66
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Member
Olin Corporation
Manufacturer of ammunition, chlorine, and sodium hydroxide
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Member*
Occidental Chemical Corp
Manufacturer of polyvinyl chloride resins, chlorine and caustic soda
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Member
Motiva Enterprises
Joint Shell-Saudi Refining venture
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Member
Marathon Petroleum Corporation
Parent company; the nation's fourth-largest refiner
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Member