Thomas M. Kelley

American Petroleum Institute (API) is the only national trade association that represents all aspects of America's oil and natural gas industry. Its more than 400 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. They are producers, refiners, suppliers, pipeline operators and marine transporters, as well as service and supply companies that support all segments of the industry.

MPLX GP LLC owns, operates, develops and acquires pipelines for petroleum and energy industries. The company is headquartered in Findlay, OH.

Marathon Oil Co. explores, transports and markets crude oil, and natural gas. It focuses on oil and gas exploration and production in Angola, Canada, Equatorial Guinea, Norway, the UK and the US. The company was founded by Henry M. Ernst in 1886 and is headquartered in Houston, TX

Marathon Petroleum Co. LP operates as a refining, marketing, and transportation company. It offers gasoline, asphalt, and petrochemical products. The company is headquartered in Findlay, OH.