- 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 ...
Dynamite in which part of the nitroglycerin is replaced by ammonium nitrate; used in mining.
Industry:Mining
Branch of metallurgy that deals with the recovery or extraction of metals from their ores.
Industry:Mining
Characteristic of, pertaining to, situated in or upon, formed in, or derived from volcanoes.
Industry:Mining
Essentially, to secure the maximum output of coal from the minimum length of face with due regard to safety and development. To measure the degree of concentration at a colliery the following data are collected: (1) the total length of coalface; (2) the total length of main haulage roads; and (3) the total output. In general, the greater the dispersion of the workings, the greater the manpower employed and the higher the costs of production.
Industry:Mining
Gr. Brit. At the National Coal Board collieries, in order to assess the degree of concentration, certain basic data are collected, involving the pithead output, length of main haulage roads, and length of coalface in production.
Industry:Mining
Is calculated in the same way as fan efficiency, but using a reading of static pressure at some point instead of total pressure. Was formerly widely quoted, and is still used to some extent, in relation to mine fans.
Industry:Mining
Pertaining to the texture of a recrystallized rock in which the shape of the grains is threadlike.
Industry:Mining
Peat that in spite of its fibrous condition, is soft, noncoherent, plastic, and on drying, shows great shrinkage.
Industry:Mining
Copper that has been refined by the use of a furnace process only, including refinery shapes and, by extension, fabricator's products made therefrom. Usually when this term is used alone, it refers to fire-refined, tough pitch copper without elements other than oxygen being present in significant amounts.
Industry:Mining
In bituminous coal mining, person who makes morning examinations for gas before workers enter the mine.
Industry:Mining
