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- Concentration of manganese ore from southeastern Juab County, Utah
- Concentration of fluorite ores from Arizona, California, Idaho, Montana, Nevada, and Wyoming
- Concentration of manganese ores from Grand and Emery Counties, Utah
- Concentration of gravity tailings from the Grasselli deposit, Park City, Utah
- Concentration of carbonate and oxide manganese ores from the vicinity of Tracy, Central California
- Concentration of manganese ores from Lincoln County, Nev.
- Concentration of oxide manganese ores from the Turtle claims and Pacific Coast Manganese properties, Paymaster District, Imperial County, Calif.
- 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 vicinity of Death Valley National Monument, California
- Concentration of oxide and silicate manganese ores from the vicinity of Golconda, Nev.
- Sulfidization of tin oxide and volatilization of tin sulfide
- Laboratory evaluation of some factors in cyaniding gold placers