- 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 designation as to whether optically positive or optically negative; said of minerals.
Industry:Mining
The detailed investigation of a coal or mineral area on which a preliminary report was favorable. The final exploration of an area may involve a costly boring program, surveys, and sampling.
Industry:Mining
The detention of a vessel, railroad car, or other vehicle beyond an allotted time and for which a fee is usually charged.
Industry:Mining
The determination of the metallic contents and recoverable metal in any given ore by the milling of a sufficient quantity to afford average milling conditions.
Industry:Mining
The determination of the physical, electrical, and radioactive properties of the rocks traversed by a borehole.
Industry:Mining
The determination of the shape, size, quality, quantity, and variability of the geologic entity and the limits of variable geologic features, so as to provide the information for synthesis of commonly subtle features into an accurate, predictive description of the resource environment.
Industry:Mining
The determination of velocities and average velocities within the earth by seismic measurements.
Industry:Mining
The determination, by chemical methods, of the proportionate amounts of various constituents of coal. Two kinds of coal analyses are ordinarily made: (1) proximate analysis, which divides the coal into moisture (water), volatile matter, fixed carbon, and ash. Percentage of sulfur and heat value in Btus per pound or kilogram, each obtained by separate determination, are usually reported with the real proximate analysis; and (2) ultimate analysis, which determines the percentages of the chemical elements carbon, hydrogen, oxygen, nitrogen, and sulfur. Other elements that may be present are considered impurities and are reported as ash.
Industry:Mining
The detonation of an explosive charge earlier than warranted. Premature explosion may be due to carelessness, accidental percussion, a faulty fuse, or degenerated explosives.
Industry:Mining
The detonation of an explosive charge or the initiation of a blasting cap before the planned time.
Industry:Mining
