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Contour strip mining is a method of surface mining or in which bulldozers, power shovels, or stripping wheels are used to remov e large chunks of earth in terraced strips in order to extract coal
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Materials such as coal and tar sand are located relatively near the surface of the earth. The method to recover such materials is called strip mining, a form of surface mining where surface vegetation, soil and rocks are removed in strips and often times together with controlled explosions in order to make the removal process more efficient.
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Types of surface mining techniques include contour strip, area, open pit, and mountaintop removal. In mountaintop removal, entire coal seams running through the upper portion of a mountain are mined by removing all of the overburden (rock or soil overlying a mineral deposit), creating a level plateau or gently rolling contour.
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Mountaintop removal mining (MTR), also known as mountaintop mining (MTM), is a form of surface mining at the summit or summit ridge of a mountain. Coal seams are extracted from a mountain by removing the land, or overburden, above the seams.This method of coal mining is conducted in the Appalachian Mountains in the eastern United States. Explosives are used to remove up to 400 vertical …
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Andrew P. Schissler, in Encyclopedia of Energy, 2004. 2.3 Strip Mining. Strip mining is employed in coal reserves where the overburden is removed in rectangular blocks in plan view called pits or strips. The pits are parallel and adjacent to each other. Strip mining is fundamentally different from contour or area mining on how the overburden is displaced, called spoil handling.
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#118666778 - An open Strip Coal mine for energy supplyment. Massive nature.. Similar Images . Add to Likebox #129711817 - Open Pit Taconite Mine Scenic View. Similar Images . Add to Likebox #101258331 - soft coal opencast mining in Lusatia, Germany. Similar Images ...
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Type of surface mining that uses explosives, massive shovels, and even larger machinery called draglines to remove the top of a mountain to expose seams of coal underneath a mountain. Compare area strip mining, contour strip mining.
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Contour Mining and its Associated Problems Assuming that mining is going to take place, the first decision necessary to the reclamation scheme is the ultimate use for the mined land. Inherent in this decision is the engineering decision of whether to terrace or to backfill to original contour.
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The Contour or Bench method of surface or strip mining is usually associated with coal, where a seam or multiple seams are located at a certain elevation or elevations through a mountain or hill. Contour mining allows for the extraction of coal from mountainous areas, where it is not feasible to extract the entire seam, using mountain top ...
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Contour mining is associated with coal. This bed of coal is located at an elevation in a mountain range or any other hilly area. It is a method of strip or surface mining. It is also referred to as Bench mining. The coal is extracted from a mountainous area where it is not possible to extract the entire seam using mountain top removal mining.
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Sep 24, 2015· Surface mining refers to a category of mining where soil and rock overlying the mineral deposit are removed. There are several types of surface mining, and strip mining counts as one of them. In strip mining, a thin layer of material known as an overburden is removed so that access is made to the minerals buried underneath.
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ing. Contour (or collar) mining progresses in a narrow zone following the outcrop of a coal seam in mountainous terrain. The specific methods used in contour mining are referred to as haulback, box-cut, and block-cut mining (Anon., 1979). The unique aspect of both area and contour mining is that over-
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Four underground mines (Lower War Eagle, Powellton, Elklick Chilton, Eagle 1) produce high- volatile metallurgical coal using room and pillar retreat mining methods using continuous miner equipment. Two surface mines (Toney Fork, Elklick Surface) produces thermal coal with a combination of contour strip area mining and point removal methods.
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The present invention relates to a combination of open cast strip mining and auger mining of thin seams of hydrocarbonaceous deposits. In this mining method, a first working pit is stripped to expose the deposit, the hydrocarbonaceous material extracted and the exposed deposit seam face of at least one highwall is auger mined. A second and successive working pits are opened parallel to but ...
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Other articles where Contour strip mining is discussed: auger mining: Augering is usually associated with contour strip-mining, recovering coal for a limited depth beyond the point where stripping becomes uneconomical because the seam of coal lies so far beneath the surface.
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Examples of strip mining in a sentence, how to use it. 53 examples: They thought that strip mining of that energy source would be profitable. - We…
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Surface coal mining in the steep terrain of the central Appalachian coalfields includes: mountaintop removal, contour, area, highwall, and; auger mining. Operations are concentrated in: eastern Kentucky, southern West ia, western ia, eastern Ohio, and; scattered areas of eastern Tennessee. Surface coal mining involves:
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Jan 24, 2020· The business includes extracting coal from the ground using modern mining, underground mining, contour mining, strip mining or any other technique. The business, no doubt, requires a lot of manpower, skillset, technical equipment, and knowledge but the rate of return you can get from this business truly deserves all that.
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Strip mining methods employed to recover coal can be divided into two general types: area and contour. AREA MINING Area strip mining is practiced on gently rolling to relatively flat terrain and is commonly found in the midwest and far west (Figure 10).
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Strip mining is a type of surface mining which involves the removal of a thin layer of material known as an “overburden” to access buried deposits of useful minerals.This type of mining is only effective in areas where mineral deposits are very close to the surface, making it feasible to quickly and easily remove the overburden to get to them.
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Strip mining is accomplished by two techniques; area stripping and contour stripping. Where coal seams are relatively flat and near the surface. In area strip mining, the overlying material is removed from the seams of coal. Area strip mining is removed in long narrow bands, or strips, followed by removal of the exposed coal.
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Table 2. Estimates of remaining Wyoming coal resources (billions of the open-pit operation. An open-pit mine is particularly tons) as of January 1,197 3. adaptable where the coal seam is thick and flat, over- Resource Original coal resource’ Mapped and Mapped and burden thin. Contour stripping is most adaptable where a seam
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Surface mining techniques are categorized as either strip, open pit, or mountaintop removal. Strip mining is a method used on flat terrain and involves removing soil or rock above a layer of coal, exposing the coal seam for mining. One type of strip mining is contour mining, where extraction activities occur on a hillside.
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contour strip mining. Contour strip mining is used mostly to mine coal on hilly or mountainous terrain. core. the earth's innermost zone. It is extremely hot and has a solid inner part, surrounded by a liquid core of molten or semisolid material. crust.
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This section describes the five main types of surface coal mining techniques: area mining, open pit mining, contour mining, auger mining, and mountaintop removal. Underground mining is also considered in this section. Terrain, economics, and custom generally dictate which technique an operator chooses.. All surface or strip mining first removes the overlying vegetation, soil and underground ...
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Jan 25, 2018· Contour strip mining and area strip mining are the two forms of strip mining, which is often used to extract coal and lignite. In contour strip mining, bulldozers or power shovels are deployed to take away huge amounts of ground material in terraced strips for extracting coal from a seam on a hill.
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