Search U.S. government technical reports digitized or harvested by TRAIL.
Acid-ferrous sulfate leaching of low-grade manganese carbonate and oxide ores, Cuyuna range, Minnesota
Operation of a dithionate-process pilot plant for leaching manganese ore from Maggie Canyon deposit, Artillery Mountains region, Mohave County, Ariz.
Metallurgical studies of rhodonite ores, Silverton district, Colorado :(In three parts).