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- Concentration of fluorite ores from Arizona, California, Idaho, Montana, Nevada, and Wyoming
- Concentration of manganese ores from Grand and Emery Counties, Utah
- Concentration of Utah fluorite ores
- Beneficiation of western beryl ores
- Concentration of copper-cobalt ores from the Blackbird District, Lemhi County, Idaho
- Beneficiation of oxide and silicate manganese ores from Crook, Albany, and Washakie counties, Wyo. :(Caulkins-McGuckin, J. B. C., and Gheen Properties)
- Concentration of oxide manganese ores from the Tintic district, Eureka, Juab County, Utah
- Concentration of oxide manganese ores from vicinity of Winkelman, Pinal county, Ariz.