MPLX vice president to retire; successor named

Craig O. Pierson, vice president of operations of MPLX, Marathon Petroleum Corp.’s energy-and-logistics subsidiary, and president of MPLX’s subsidiary, Marathon Pipe Line, will retire Jan. 1.

Timothy J. Aydt, who is currently general manager for terminal, transport & rail for Marathon Petroleum Corp., will replace Pierson as vice president of operations and president of Marathon Pipe Line. Aydt will report to John Swearingen, Marathon Petroleum senior vice president of transportation and logistics and vice president of crude oil and refined products pipelines.

Pierson joined Marathon in 1978 as a pipeline engineer and held numerous positions of increasing responsibility in pipeline, transportation and logistics and has had experience in the marketing sector. Pierson was named vice president of operations for Marathon Pipe Line in 2005 and assumed the role of president in 2011.

Aydt began his career with Marathon Petroleum Corp. in 1985 as a pipeline engineer. He has held senior management positions throughout the company, including assignments in marketing & transportation engineering and at Marathon Petroleum’s refineries in Detroit and Robinson, Illinois.

Aydt was named general manager of terminal, transport & rail in 2013, following the completion of the $2.2 billion Detroit Heavy Oil Upgrade Project, where he served as project director.

Aydt graduated from the University of Missouri-Rolla with a bachelor’s degree in mechanical engineering. He will remain in Findlay.



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