Search U.S. government technical reports digitized or harvested by TRAIL.
Concentration of oxide manganese ores from the Steelville and Susie Q claims, Beaver County, Utah
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