Martha Ossian Hesse

Arizona Public Service Co. engages in the provision of electric utility services. The firm provides retail and wholesale electric services to most of the state of Arizona, with the major exceptions of about one-half of the Phoenix metropolitan area, the Tucson metropolitan area, and Mohave County in northwestern Arizona. It has ownership interests in or leases several coal, nuclear, gas, oil, and solar generating facilities . The company was founded by Hutchlon Ohnick in 1886 and is headquartered in Phoenix, AZ.

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.

Enbridge Energy Partners LP owns and operates a portfolio of crude oil transportation systems. The company was founded in 1991 and is headquartered in Houston, TX.

Enbridge Energy Management LLC engages in transporting, generating, and distribution of energy and operates crude oil and liquids transportation systems. It operates through the following segments: Liquids, and Natural Gas. The Liquids segment includes the operations of Lakehead, North Dakota, and Mid-Continent systems. The Natural Gas segment is comprised of natural gas, natural gas liquids gathering and transportation pipeline systems, natural gas processing and treating facilities, condensate stabilizers and an natural gas liquids fractionation facility, as well as trucking, rail, and liquids marketing operations. The company was founded on May 14, 2002 and is headquartered in Houston, TX.

SEI-CCS LLC provides custom development and systems integration services. It delivers help desk, sales, and retail support services such as remote order processing, systems integration consulting, and hosted IT solutions. The company was founded in 1969 and is headquartered in Oak Brook, IL.

Amec Foster Wheeler Ltd. provides consultancy, engineering, project management and operations, and maintenance services to global oil and gas; mining; clean energy; and environment and infrastructure markets. The company was founded on November 2, 1982 and is headquartered in Cheshire, the United Kingdom.

Enbridge Energy Co., Inc. provides crude and natural gas transportation business services. The company was founded on October 30, 2001 and is headquartered in Houston, TX.