Union Oil Company of California. Union Energy Mining Division. Casper (Wyo.) Office mineral exploration records, 1914-1995 1950-1985
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Union Oil Company of California. Union Energy Mining Division. Casper (Wyo.) Office.
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The Union Oil Company of California (later known as Unocal) was founded in 1890. The Minerals Exploration Company was a wholly owned subsidiary of the Union Oil Company of California. In 1979, all of the company's energy mining operations (including the Minerals Exploration Company) were consolidated into the Union Energy Mining Division. The central region office of this division was based in Casper, Wyoming and was responsible for the exploration and acquisition of coal and uraniu...
Unocal Corporation
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The Union Oil Company of California was incorporated on October 17, 1890, in Santa Paula, California, after founding members Lyman Stewart, Wallace L. Hardison and Thomas Bard merged their respective California oil interests: Hardison and Stewart Oil, Sespe Oil, and Torrey Canyon Oil. Union's early years were marked by struggle and infighting between the company's founders; nonetheless, its first producing wells accounted for nearly one-fourth of California's oil production. By 1900, Lyman Stewa...
