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- Concentration of oxide manganese ores from the Steelville and Susie Q claims, Beaver County, Utah
- Concentration of carbonate and oxide manganese ores from Silver Bow, Jefferson and Park Counties, Mont.
- Concentration of oxide manganese ores from vicinity of Winkelman, Pinal county, Ariz.
- Beneficiation of oxide manganese and manganese-silver ores from southern Arizona,
- Measurement and nature of the apparent viscosity of water suspensions of some common minerals