Marathon Oil Corporation, based in Houston, is an independent exploration and production company focused on significant oil-rich resource plays in the U.S., including the Eagle Ford in Texas and the Bakken in North Dakota. They also have international operations in Equatorial Guinea.
Marathon Petroleum Corporation, headquartered in Findlay, Ohio, is a leading integrated downstream energy company with the nation's largest refining system. Their marketing system includes branded locations across the United States, and they also own a midstream company, MPLX LP, which operates gathering, processing, and transportation assets.
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