- 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 ...
Blast furnace smelting of copper ores in which some of the heat is provided by oxidation of iron sulfide and some by combustion of coke.
Industry:Mining
Blast roasting in which air currents are drawn downward through the ore mass.
Industry:Mining
Blasting a quarry or opencast face by using small- or medium-diameter holes drilled from top to bottom of the face.
Industry:Mining
Blasting coal out of the solid face as opposed to blasting coal that has been undercut by hand or by coal cutter.
Industry:Mining
Blasting in which different sections of the rocks are blasted out against each other.
Industry:Mining
Blasting powders manufactured in cartridge form for use in small diameter shotholes. These pellets are particularly useful for horizontal shotholes.
Industry:Mining
Blasting the working face in a coal mine without providing a second free face by cutting or shearing before blasting.
Industry:Mining
Blocks of coal left between the workings of different mine owners and within those of a particular mine for safety and the reduction of operational costs. It helps to prevent disasters of inundation by water, of explosions, or fire involving an adjacent mine or another part of a mine and to prevent water running from one mine to another or from one section to another of the same mine.
Industry:Mining
Blowing air through the hole at casting, to clean the hearth of iron and cinder.
Industry:Mining
