Search U.S. government technical reports digitized or harvested by TRAIL.
Concentration of oxide manganese ore from the Ophir Hill mine, Ophir, Tooele County, Utah
Concentration of gravity tailings from the Grasselli deposit, Park City, Utah
Concentration of copper-cobalt ores from the Blackbird District, Lemhi County, Idaho
Concentration of oxide manganese ores from Lander County, Nev.