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.
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 Daggett Chief manganese deposit, Manila, Daggett County, Utah