drift mining britannica

drift mining britannica

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Drift mining explained
Drift mining explained. Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam.
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Drift mining Wikipedia
Drift is a more general mining term, meaning a nearhorizontal passageway in a mine, following the bed (of coal, for instance) or vein of ore. [dubious discuss] A drift may or may not intersect the ground surface. [4] A drift follows the vein, as distinguished from a crosscut that intersects it, or a level or gallery, which may do either. [5]
Drift Mining Britannica
Drift Mining Britannica Home Drift Mining Britannica. Our Offered Machines to you. Who are in extremely love with eco friendly system.. HGT Hydraulic Gyratory Crusher. HGT Gyratory Crusher is a newtype intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent ...
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Drift Mining, Mining Process, Mining Techniques, Gold, Zinc, Coal ...
Drift mining is a process of accessing precious geological material, like coal, by cutting into the side of the earth, rather than tunneling directly downwards. Drift mines have flat entries into the coal seam from a hillside. Drift mines are different from slope mines, which have a tending opening from the surface to the coal vein.
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Drift mining — Wikipedia Republished // WIKI 2
Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam. Random House dictionary says the origin of the term "drift ...
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Wikizero Drift mining
Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam. Random House dictionary says the origin of the term "drift ...
「drift mining encyclopedia」
Footwall drift mining Encyclopedia Britannica. Other articles where Footwall drift is discussed: mining: Horizontal openings: drifts: the footwall is called a footwall drift, and drifts driven from the footwall across the ore body are called crosscuts. A ramp is also a type of drift.
mining Students | Britannica Kids | Homework Help
This mining method entails drilling one or more vertical boreholes from which levels, spaced 20 to 40 feet (6 to 12 meters) apart, extend through the ore body. Each main level, which is 200 to 400 feet (60 to 120 meters) vertically apart from the other main levels, may intersect one or more of the boreholes.
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types of coal mines Students | Britannica Kids | Homework Help
Dictionary A surface mine is developed where a coal seam lies near the surface of the ground. For underground mining in hilly terrain, a drift mine may be opened where the entry can be driven horizontally; a slope mine where the entry must be driven at an angle—upward or downward—to reach the coal. A vertical shaft mine is opened on level terrain.
underground mining drift
Drift Mining, Mining Process, Mining Techniques, Gold. Drift mines are a general type of mine all through the eastern In other words Drift mines are a type of underground type of mining is performed when the rock or mineral is on the side of a mountain. This makes it simple, economic way to mine.
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Drift mines Definition Meaning MerriamWebster
Drift mines Definition Meaning MerriamWebster drift mine noun Save Word Definition of drift mine : a placer or gravel deposit worked by undergroundmining methods History and Etymology for drift mine drift entry 1 + mine Love words?
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bioinformatician. Job description of a bioinformatician. a scientist who uses software applications and programming to analyze biomedical data and statistics, such as data from DNA samples, to determine genealogy or predisposition to heritable diseases. The Editors of Encyclopaedia Britannica This article was most recently revised and updated.
mining Horizontal openings: drifts | Britannica
A drift running parallel to the ore body and lying in the footwall is called a footwall drift, and drifts driven from the footwall across the ore body are called crosscuts. A ramp is also a type of drift. Because the drift is such a fundamental construction unit in underground mining, the process by which it is made should be described.
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