Daniel C. Campbell

MarkWest Energy Partners LP engages in the business of gathering, processing and transportation of natural gas; the transportation, fractionation, storage and marketing of natural gas liquids; and the gathering and transportation of crude oil. It operates through four segments: Marcellus, Utica, Northeast and Southwest. The Southwest segment includes the operations of processing facilities in Corpus Christi, Texas. The Northeast segment assets include the Kenova, Boldman, Cobb, Kermit and the Langley natural gas processing complexes, NGL pipeline and Siloam NGL fractionation facility. The Marcellus segment includes gathering, processing and fractionation infrastructure in the liquids-rich area of the Marcellus Shale The Utica segment provides fractionation services. The company was founded in January 2002 and is headquartered in Denver, CO.

Part of Marathon Petroleum Corp., MarkWest Energy GP LLC is a company that provides oil and gas field services not elsewhere classified. The company is based in Englewood, CO. The company was founded by John C. Mollenkopf.

Part of High Point Infrastructure Partners LLC, Third Coast Midstream Holdings LLC is a company that provides investment services. The company is based in Denver, CO. Third Coast Midstream Holdings was acquired by High Point Infrastructure Partners LLC on April 15, 2013. Louis J. Dorey has been the CEO of the company since 2019.

Teletech Corp. provides call center services. The company is headquartered in South Carolina, the United States of America.

Third Coast Midstream LLC engages in transportation of natural gas. It offers, petroleum, oil and gas transportation services. It provides midstream infrastructure that links producers of natural gas, crude oil, NGLs, and condensate to end-use markets. The company was founded on August 20, 2009 and is headquartered in Houston, TX.

ARB Midstream LLC operates as a transport and storage of crude oil. It operates through Niobrara connector and Permian gateway. The company was founded by Adam Bedard, Cortney Liddiard and Rogan McGillis on March 19, 2014 and is headquartered in Denver, CO.