Search U.S. government technical reports digitized or harvested by TRAIL.
Investigation of New Idria mercury deposit, San Benito County, Calif.
Investigation of the Strawberry tungsten deposit, Madera County, Calif.
Investigation of Comet Coalition lead-zinc deposit, Lincoln County, Nev.
Investigation of the Rip Van Winkle lead-zinc-silver mine, Elko County, Nev.
Investigation of Virgin River manganese deposit, Clark County, Nev.