Search U.S. government technical reports digitized or harvested by TRAIL.
Mining and milling methods and costs at the Tennessee-Schuylkill Corporation mine, Chloride, Ariz.
Reconnaissance of Gold-Mining Districts in the Black Hills, South Dakota
Investigation of iron-ore reserves of Iron County, Utah :(supplement to R.I. 4076)
Investigation of the Thompson magnesium well, Grand County, Utah
Mining practices at the Harrington-Hickory mine Beaver County, Utah
Investigation of Sublette Ridge Vanadium Deposit, Lincoln County, Wyoming
Investigations of Salt River Vanadium Deposits, Lincoln County, Wyoming
Investigation of Daggett Chief manganese deposit, Manila, Daggett County, Utah