John Howard Diesch

Rentech, Inc. supplies wood chips, wood pellets and nitrogen fertilizers. It owns patented technologies for synthetic fuels and power production. The firm owns the intellectual property including, patents pilot and demonstration data, and engineering designs for a number of clean energy technologies designed to produce certified synthetic fuels and renewable power when integrated with third-party technologies. It also owns a biomass and natural gas-to-synthetic fuels demonstration facility located in Commerce City, Colorado. The company was founded by Dennis L. Yakobson on December 18, 1981 and is headquartered in Los Angeles, CA.

Part of Rentech, Inc., Royster-Clark Nitrogen, Inc. operates a fertilizer plant. The company is based in East Dubuque, IL. Royster-Clark Nitrogen was acquired by Rentech Development Corp. from Royster-Clark, Inc. on April 26, 2006 for $50 million.

Part of Nutrien Ltd., Vigoro Industries, Inc. is a distributor of agriculture products. The company is based in IL. Vigoro Industries, Inc. (Illinois) was acquired by Royster-Clark, Inc., a subsidiary of Nutrien Ltd. from IMC Global, Inc. on April 22, 1999 for $300 million.

Arcadian Corp. manufacures nitrogen fertilizers and feed ingredients from four manufacturing facilities. It manufactures ammonia, urea, nitric acid, ammonium nitrate and nitrogen solutions. It is located in Memphis, TN.

Monsanto Co. engages in the provision of agricultural products to farmers. It provides other seed companies with genetic material and biotechnology traits for their seed brands. The company was founded by John F. Queeny in 1901 and is headquartered in St. Louis, MO.

The Dubuque Area Chamber of Commerce is a chamber of commerce located in Dubuque, IA.