Browse TRAIL Inventories

Progress report on investigation of detachable rock-drill bits

Progress report no. 2 on investigation of detachable rock-drill bits

Progress report 4 on investigation of detachable rock-drill bits

Progress report no. 3 on investigation of detachable rock-drill bits

Inspection and maintenance of mine hoisting ropes

Bit gage v. drilling speed

Mount Weather testing adit :progress report 1

Stemming in metal mines.

Operations at the Haile Gold Mine, Kershaw, S.C.

Exploration for war minerals (through fiscal year 1942)

Stemming in metal mines.

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

Investigation of Big mica mine Cheshire County, N.H.

Investigation of Blister mica mine, Cheshire County, N.H.


Published Year

Subject

Author