Search U.S. government technical reports digitized or harvested by TRAIL.
Operations at the Haile Gold Mine, Kershaw, S.C.
Exploration for war minerals (through fiscal year 1942)
Bureau of Mines exploration of mercury deposits to June 30, 1944
Diamond-drilling blast holes, eastern Magnetite Mine A
Diamond drilling blast holes, Balmat Mine, St. Lawrence County, N.Y.
Diamond-drilling blast holes, eastern magnetite "Mine B"
Shaft sinking by diamond drilling, Bellefonte mine, National Gypsum Co., Centre County, Pa.
A skull breaker in a limestone quarry
Certain magnetite deposits in New Jersey
Bamford zinc mine, Lancaster County, Pa.
Investigation of the Ore Hill zinc-lead mine, Grafton County, N.H.
West Portal magnetite mines, Hunterdon County, N.J.
Diamond drilling blast holes, Bell Mine, the Warner Co., Centre County, Pa.
Diamond-drilling blast holes, Bellefonte Mine, National Gypsum Co., Centre County, Pa.
Diamond-drilling blast holes, Eastern Magnetite Mine C
Investigation of wood chromite mine area Lancaster County, Pa.
Investigation of Ely mine copper deposit Orange County, Vt.
Investigation of Portland beryl-mica district Middlesex County, Conn.
Investigation of Anson Betts manganese mine, Hampshire County, Mass.
Investigation of Black Mountain beryl deposit Oxford County, Maine