Service First/Central Boiler, 9476 River Rd, Ridott, IL 61067, US

Rentech Energy Midwest Corporation, formerly known as Royster-Clark Nitrogen, is one of the upper Midwest's largest ammonia fertilizer producers. It is a Delaware-based corporation that operates a nitrogen manufacturing plant that produces nitrogen-based fertilizer and industrial nitrogen products in East Dubuque, Ill. The company s plant operates ammonia and urea-ammonium nitrate pipelines to transport product from on-site storage to barges on the Mississippi River. Rentech Energy Midwest Corporation s products include anhydrous ammonia, nitric acid, urea and carbon dioxide. The company is a wholly owned subsidiary of Rentech, which is listed on the American Stock Exchange and is one of the world's leading synthetic fuels technology and development companies.