- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
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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 portion of a solution in immediate contact with the cathode during electrolysis.
Industry:Mining
The portion of an aggregate consisting of particles with diameters smaller than approx. 1/4 in (4.8 mm). Compare: aggregate; coarse aggregate.
Industry:Mining
The portion of an aggregate retained on the No. 4 sieve, consisting of particles with diameters greater than 4.76 mm. Compare: aggregate; fine aggregate.
Industry:Mining
The portion of the carbon in iron or steel that is present as graphite; distinguished from combined carbon.
Industry:Mining
The portion of the mineral matter of coal organically combined with the coal. It contains elements that have been assimilated by the living plant, such as iron, phosphorus, sulfur, calcium, potassium, and magnesium.
Industry:Mining
The portion of the overlying strata at the coal face that is supported and controlled by face supports. This weight "advances" as the face line moves forward.
Industry:Mining
The position in a coal seam in which a horizontal machine cut is made. The normal cutting horizon is along the bottom of the seam.
Industry:Mining
The potentiality of a mineral to develop its own crystal form against the resistance of the surrounding solid medium (Eskola, 1939).
Industry:Mining
The practical meter-kilogram-second (mks) unit of electrical potential difference and electromotive force (emf) that equals the difference of potential between two points in a conducting wire carrying a constant current of 1 A when the power dissipated between these two points equals 1 W. It equals the potential difference across a resistance of 1 Omega when 1 A of current is flowing through it; the standard in the United States.
Industry:Mining
