- المجال: 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 ...
A passageway parallel to the haulage slope used for the passage of the air current.
Industry:Mining
A passageway, the height of which requires a person to stoop or crouch in traversing it.
Industry:Mining
A passive roof-bolting technique in which a rebar-type bolt is anchored in resin. A twopart resin cartridge is placed at the back of a hole and is mixed as the bolt is inserted and rotated. The bolt is forced tight against the roof until the resin sets.
Industry:Mining
A paste made by mixing powdered charcoal, coal, or coke with clay, molasses, tar, or other suitable substance. Used for lining hearths, crucibles, etc.
Industry:Mining
A paste made by mixing powdered charcoal, coal, or coke with clay, molasses, tar, or other suitable substance. Used for lining hearths, crucibles, etc.
Industry:Mining
A patented circle brick, with book ends, used in domestic furnaces, cupola furnaces, and acid tank linings.
Industry:Mining
A patented mining method in which large, parallel, vertical drillholes permit placement of nearly spherical explosive charges, such that horizontal slices of ore are then broken into an undercut; applicable to ore of only moderate strength.
Industry:Mining
A patented process for making cast steel by melting wrought-steel scrap with about 2.0% ferrosilicon, up to about 0.5% ferromanganese, and about 3.0% aluminum, then casting in molds of a special composition.
Industry:Mining
