Company Snapshot:
Marathon, founded as the Ohio Oil Company, has gone through several incarnations over the decades. For a while it was taken over by the Standard Oil Trust, later it was acquired by U.S. Steel, and still later its refining and marketing operations were for a time part of a joint venture with Ashland Oil. Today Marathon is independent and is among the mid-sized oil majors based in the United States. The company has faced controversy in connection with the air pollution caused by its U.S.
