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Author Wells, R. R.
Title Benefication of oxide manganese ores from Arapahoe, Douglas, Saguache, Custer, Chaffee, and Park Counties, Colo. / by R.R. Wells, K.C. Vincent, and T.F. Mitchell.
Imprint Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1952.


 GovDocs Federal  I 28.23:  4836-4849    AVAILABLE
Description 16 pages ; 27 cm.
Series Report of investigations / United States Department of the Interior, Bureau of Mines ; 4845.
Report of investigations (United States. Bureau of Mines) ; 4845.
Note Bound with : Water infusion of coal pillars before mining, Kenilworth mine, Independent Coal & Coke Co., Kenilworth Utah.
Subject Manganese ores -- Colorado -- Arapahoe County.
Manganese ores -- Colorado -- Douglas County.
Manganese ores -- Colorado -- Saguache County.
Manganese ores -- Colorado -- Custer County.
Manganese ores -- Colorado -- Chaffee County.
Manganese ores -- Colorado -- Park County.
Manganese ores.
Colorado -- Arapahoe County.
Colorado -- Chaffee County.
Colorado -- Custer County.
Colorado -- Douglas County.
Colorado -- Park County.
Colorado -- Saguache County.
Other Author Vincent, K. C.
Mitchell, T. F.
United States. Bureau of Mines.