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A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
Bachelors Theses and Reports, 1928 - 1970
This investigation concerns the development of a satisfactory method or extracting or concentrating gold and silver from the ores of the U. S. Grant Mine. The choice between applying an extractive process and one by which the valuable mineral constituents are concentrated depends on more than one factor.