CHS Refinery at McPherson KS

Koch Carbon is engaged in the trading, marketing and terminalling of petroleum coke, coal, salt, slag, cement, clinker and ocean freight. The company is a subsidiary of Koch Industries. Koch Industries and its sister company, Koch Holdings, own a diverse group of privately owned companies engaged in trading, operations and investment throughout the world. Founded in the late 1920s, Koch Industries has developed and accrued companies that have a presence in more than 50 countries and employ more than 70,000 people. Its companies are engaged in core industries such as petroleum, chemicals, energy for heating and cooling, fibers, intermediates and polymers, minerals, fertilizers, pulp and paper, chemical technology equipment, ranching and securities and financial services. Koch Carbon is headquartered in Wichita, Kan.

Frontier El Dorado Refining is a subsidiary of Frontier Oil Corporation. The company produces gasoline, diesel fuels, aviation fuels and asphalt. It is one of the largest refineries in Kansas. Frontier El Dorado Refining has the capability to process approximately 110,000 barrels of crude oil and nearly 15,000 barrels of natural gas liquids daily. Frontier Oil Corporation is an independent oil refining and marketing company. It has refineries in Wyoming and Kansas. Its primary products of gasoline, diesel and asphalt are marketed in the Rocky Mountain and Plains States. Frontier Oil Corporation sells most of its gasoline and diesel to unbranded jobbers, but also has supply arrangements to retail operations of other oil companies, such as CITGO Petroleum. Frontier El Dorado Refining is located in El Dorado, Kan.

C-Tech Industrial Group Inc. is a privately owned enterprise headquartered in El Dorado, Kansas, specializing in the fabrication, construction, and maintenance of industrial and manufacturing facilities. Their primary focus encompasses sectors such as petrochemical, chemical, ethanol, fertilizer, and petroleum refining. Under its umbrella, C-Tech comprises several companies, including Blackburn Construction Inc., which serves as a general contractor for industrial construction; Blackburn Maintenance Inc., dedicated to the maintenance of industrial equipment; ConFab Incorporated, which offers custom pipe and metal fabrication; and Industrial Insulation Services Inc., known for its thermal insulation solutions. Collectively, these entities support a wide range of applications essential to the industrial sector. Generated from the website