Frontier Oil Corporation - Frontier oil corporation is an independent oil refining and marketing company with complex refineries.
http://www.frontieroil.com/ more info...
Kern Oil & Refining Co. - (Kern) is an independent oil refining and marketing company products fuel and gasoline, aviation turbine fuel (jet fuel), etc.
http://www.kernoil.com/ more info...
Marathon Oil Corporation - Provides domestic refining, marketing and transportation of petroleum products.
http://www.marathon.com/ more info...
Refining Online - Refining online is a leading web portal for the petroleum refining industry.
http://www.refiningonline.com/ more info...
Refining Process Services - Offering technical seminars for the refining process industry, refining process services conducts professional seminars.
http://www.petroleumrefining.com/ more info...
U.S Oil & Refining Co. - Industry leader in the production and supply motor, aviation and marine fuels and asphalt in the puget sound market.
http://www.usor.com/ more info...
