- 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 ...
An intimate mixture of an aggregate, water, and portland cement, which will harden to a rocklike mass.
Industry:Mining
An intimate mixture of pyrite and chalcocite or the matrix of a blackish copper ore containing grains of pyrite, Tennessee.
Industry:Mining
An intimate mixture or intergrowth of azurite and malachite, commonly massive and concentrically banded; used as an ornamental stone.
Industry:Mining
An intimate mixture or intergrowth of azurite and malachite, commonly massive and concentrically banded; used as an ornamental stone.
Industry:Mining
An intimate mixture or intergrowth of azurite and malachite, commonly massive and concentrically banded; used as an ornamental stone.
Industry:Mining
An intricate system of interconnecting and intersecting faults of the same or different ages.
Industry:Mining
An intrinsically safe public address system developed for coal face communications. Up to 20 individual units, each containing a telephone handset and speaker, can be coupled together along the face and gate roads by a five-way cable. Instructions, requests, etc., made into any one of the handsets are broadcast simultaneously over all the loudspeakers.
Industry:Mining
An intrusive mass that is so irregular in form and its relationship to the invaded formations is so obscure that it cannot be designated a dike, sill, or laccolith.
Industry:Mining
An intrusive trachytic rock, regarded as a differentiation product of a gabbroic magma. Maenite is a bostonite relatively high in calcium and low in potassium.
Industry:Mining
An invariant point at which three phases coexist in a unary system. When not otherwise specified, it usually refers to the coexistence of solid, liquid, and vapor of a pure substance.
Industry:Mining
