Marathon Ashland Petroleum LLC

Headquartered in Findlay, Ohio, Marathon Petroleum Corporation (MPC), together with its subsidiaries, including Marathon Petroleum Company LP, Speedway LLC and MPLX LP, is one of the largest petroleum product refiners, marketers and transporters in the United States. MPC is the nation's fourth-largest refiner and the largest refiner in the Midwest. MPC's refining, marketing and transportation...