Rebecca Roberts

Mine Safety Appliances Co. LLC develops, manufactures and supplies safety products. The firm's products include self-contained breathing apparatus, gas masks, gas detection instruments, head protection, respirators, thermal imaging cameras and fall protection. Its solutions integrate multiple combinations of electronics, mechanical systems and advanced materials to ensure that users around the world remain protected in even the most hazardous of situations. The company was founded by John T. Ryan Sr. and George H. Deike Sr. on June 14, 1914 and is headquartered in Pittsburgh, PA.

Dynegy, Inc., a holding company provides electricity, natural gas and natural gas liquids to markets and customers throughout the United States through its subsidiaries. The company owns and operates a diverse portfolio of assets, including power plants and gas processing plants. It provides wholesale power to utilities, cooperatives, municipalities, and commercial and industrial customers. It gathers and processes natural gas, and fractionates, stores, transports, and markets natural gas liquids. The company was incorporated in the state of Illinois in 1999 and is based in Houston, Texas.

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.

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.