Mines and Geology, Butte, Mont. BA Atomic Energy Commission, Butte Suboffice, Butte, Mont. D Geological... 1 uranium mine, Seven Mile Canyon area, Grand County, Utah: TEI-287, Jan. 11, 1954. GJ, SL. Fischer... Results of exploration at the Old Leyden coal mine, Jefferson County, Colo.: TEM-292, Mar. 30, 1953...pegmatites of the Errington-Thiel mine, Elko County, Nevada: TEI-71, Dec. 28, 1949. Office of Director...Ridge, and West End claims near Clancy, Jefferson County, Mont.: TEM-31, Oct. 19, 1951. D, SL, T. (332, |