Daniel D. Greenwell

Terra Industries, Inc. engages in manufacturing and marketing of nitrogen products. It produces anhydrous ammonia, urea ammonium nitrate solutions, ammonium nitrate and urea for use in nitrogen fertilizers. The company also makes nitric acid and dinitrogen tetroxide for use in industrial applications. It was founded in 1964 and is located in Sioux City, IA.

Zoltek Cos., Inc. develops, manufactures and markets carbon fibers & technical fibers. It has two segments: Carbon fibers and Technical fibers. The Carbon fibers segment manufactures commercial carbon fibers used as reinforcement material in composites. The Technical fibers segment manufactures oxidized acrylic fibers and specialty carbon fibers used to manufacture aircraft brake pads and for heat/fire barrier applications. The company was founded by Zsolt Rumy in 1975 and is headquartered in Bridgeton, MO.

Part of Merck KGaA, Sigma Chemical Co. is a company that manufactures and distributes chemical products. The company is based in St. Louis, MO.

KPMG LLP engages in the provision of audit, tax, and advisory services. It serves the banking and capital markets, building, construction and real estate, consumer and retail, energy, natural resources and chemicals, financial services, government and public sector, healthcare and life sciences, industrial manufacturing, insurance, media and entertainment, private equity, technology, telecommunications, and venture capital industries. The company was founded in 1987 and is headquartered in New York, NY.

Terra Nitrogen GP, Inc. manufactures nitrogenous fertilizers. The company is headquartered in Sioux City, IA.

Terra Nitrogen Co. LP was engaged in the manufacture of nitrogen fertilizer products. Its products included anhydrous ammonia, granular urea, and urea ammonium nitrate solutions. The company was founded on February 23, 1990 and is headquartered in Deerfield, IL.