- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
Gold with so clean a surface that it readily cyanides after liberation by comminution.
Industry:Mining
Gold-bearing ore from which the sulfides have been removed by the leaching of ground waters so that the ore consists almost entirely of quartz gangue, some iron oxides, and free gold.
Industry:Mining
Gr. Brit. A geological map showing the extent of solid rock, on the assumption that all surficial deposits, other than alluvium, are absent or removed.
Industry:Mining
Gr. Brit. A map of the mine workings, and sections of the shafts and seams being worked, which the colliery manager must keep at the pithead office in accordance with the Surveyors and Plans Regulations, 1956, of the Act.
Industry:Mining
Gr. Brit. A system of rectangular coordinates used by the Ordnance Survey and based upon the Transverse Mercator Projection (which is also known as the Gauss Conformal Projection).
Industry:Mining
Gr. Brit. Afterdamp or chokedamp; or pressure exercised by a pent-up gas resulting in its escape with or without rupture of strata.
Industry:Mining
Gr. Brit. Coordinates, referred to the National Grid of the Ordnance Survey, which are specified in meters and consist of two components, an Easting and a Northing.
Industry:Mining
Gr. Brit. Generally a colliery producing less than 1,000 st/d (907 t/d). See: large colliery
Industry:Mining
