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United States Bureau of Mines
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 ...
Applicable to all mineral deposits and mining camps, but as used in the United States it is usually applied to placer mining only.
Industry:Mining
Applicable to drill machines and/or the methods used to drill boreholes by the chipping action of impacts delivered to a chisel-edged bit.
Industry:Mining
Applicable to placer mining locations and entries upon surveyed lands to be applied on the basis of 10-acre (4-ha) legal subdivisions.
Industry:Mining
Applicable when rock or formation being drilled produces cuttings and sludge, which tend to fill the waterways of a bit or to adhere massively to the borehole walls or drillstem equipment. Compare: balling formation; sticky.
Industry:Mining
Applicable when the weight of the drill rods is great enough to impose an adequate pressure on a bit to make it cut properly.
Industry:Mining
Application of comminution in such a way as to accentuate differences in grindability between the various mineral species in the ore. Therefore, in suitable cases, the relatively tough mineral particles remain coarse while the more friable ones are finely ground.
Industry:Mining
Application of crushing force so that the distance moved diminishes without change of input strength, between gape and set. Thus greatest speed of movement of the approaching faces is applied with weakest thrust and vice versa.
Industry:Mining
Application of powdered zinc, in suspension in an organic solvent, to iron articles. On evaporation of the solvent an adherent coating of zinc remains.
Industry:Mining
Applied by Berzelius to those substances that exist in two or more forms, such as diamond and graphite.
Industry:Mining
Applied in Florida to a certain class of phosphatic pebbles, or concretions, found in rivers as distinguished from land pebble phosphate.
Industry:Mining