- 行业: 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 ...
The process of transforming mine land into usable conditions; e.g., with regard to residential, recreational, agricultural, commercial or forestry purposes.
Industry:Mining
The process of treating finely ground gold and silver ores with a weak solution of sodium or potassium cyanide, which readily dissolves these metals. The precious metals are then obtained by precipitation from solution with zinc, or by adsorbtion on activated carbon.
Industry:Mining
The process of treating silver ores by grinding in pans or tubs with the addition of mercury, and sometimes of chemicals, such as blue vitriol and salt. Named from the Washoe District, NV, where it was first used.
Industry:Mining
The process of varying the point within the cycle at which anode conduction is permitted to begin.
Industry:Mining
The process or processes by which a mineral or minerals are introduced into a rock, resulting in a valuable or potentially valuable deposit. It is a general term, incorporating various types; e.g., fissure filling, impregnation, and replacement.
Industry:Mining
The process or processes by which metals are introduced into a rock, resulting in an economically valuable deposit; the mineralization of metals.
Industry:Mining
The process whereby rocks of different composition from that of the parent magma are formed, by assimilation.
Industry:Mining
The processes in which the salts or the soluble minerals in the Earth are dissolved by water and carried to the sea.
Industry:Mining
The processes of mylonitization and recrystallization to produce a phyllonite.
Industry:Mining
The processes whereby fragmental material resulting from rock weathering is transformed into a medium that can support plant growth.
Industry:Mining
