Deep Rock Refining

Company History: Founded in 1913 by H.M. Byllesby, a Chicago investment banker, Deep Rock grew in the 1920s and 30s with the purchase of several rivals. Based in Tulsa, Oklahoma, it was purchased by the Kerr-McGee Corporation in 1955, and it continues to operate today. Deep Rock was based in the Oklahoma oil fields and had an extensive marketing presence throughout the midwest.

Successor/Parent History: The Kerr-McGee Corporation, founded in 1929, was an American energy company involved in oil exploration, production of crude oil, natural gas, perchlorate and uranium mining and milling in various countries. On June 23, 2006, Anadarko Petroleum acquired Kerr-McGee in an all-cash transaction totaling $16.5 billion plus $2.6 billion in debt and all operations moved from their base in Oklahoma, United States.

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