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United States Bureau of Mines
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 ...
Cubes of fully or partially oxidized and hydrated pseudomorphs of pyrite in alluvial workings.
Industry:Mining
Cubic feet of ore per ton in deposit.
Industry:Mining
Cumb. An outcrop. As a verb, to crop out.
Industry:Mining
Cumb. Sandy fireclay. Compare: sill
Industry:Mining
Cumb. Spotted schist. Compare: calamanco; linsey.
Industry:Mining
Cupellation assay, for gold content of barren cyanide solution. The gold (and silver) is precipitated together with metallic lead as sponge on aluminum. This metal is cupeled, and the gold prill is weighed.
Industry:Mining
Current efficiency at a cathode.
Industry:Mining
Current that will produce heat at the same rate as a direct-current ampere, when flowing through a given ohmic resistance.
Industry:Mining
Curve lines drawn through coordinating points, indicating ignition or propagation, in which the rectilinear coordinates of the diagram are factors of volatile fixed-carbon ratios, total incombustible, density of dust, size of dust particles, and combustible gases, if any, in the air current.
Industry:Mining
Curved strips placed in a sharp bend or elbow in rectangular duct to direct the air around the bend in a streamlined flow.
Industry:Mining
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