Search U.S. government technical reports digitized or harvested by TRAIL.
Annual Report of the Mining Division, Fiscal Year 1941
Annual Report of the Mining Division, Fiscal Year 1942
Utilization of Three Kids Manganese Ore in the Production of Electrolytic Manganese
Lake Valley Manganese Deposits, Sierra County, New Mexico
Investigation of the Huber-Rydalch Manganese Deposits, Tooele County, Utah