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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 ...
The investigation of the chemical composition of minerals and its variation, the processes of mineral formation, and the changes minerals undergo when acted upon chemically. Compare: physical mineralogy; crystallogeny.
Industry:Mining
The irregular reflection, refraction, or diffraction of sound waves in many directions.
Industry:Mining
The isometric form hh0 having twelve faces in the shape of a rhombus; e.g., garnet. Compare: pyritohedron
Industry:Mining
The isoseismal line surrounding the area experiencing the greatest damage to manmade structures during an earthquake.
Industry:Mining
The isothermal transformation of a ferrous alloy at a temperature below that of pearlite formation and above that of martensite formation. Austempering is the isothermal transformation used to form a unique acicular matrix of bainitic ferrite and stable highcarbon austenite in hardenable cast irons.
Industry:Mining
The jig used to save the smaller particles of ore in a concentrator.
Industry:Mining
The keeping of a heading or breast accurately on a given course by means of a compass or transit. Also, called driving on sights.
Industry:Mining
The kilowatt power output that can be delivered continuously at the rated output voltage. It may also be designated as the 100% load or full-load rating of the unit.
Industry:Mining
The kinetic energy remaining in a substance at a temperature of absolute zero.
Industry:Mining
The laboratory procedure followed in examining and determining the physical characteristics of a soil sample.
Industry:Mining
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