contour strip mining coal mining

Auger Mining - MiningInfo

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. An auger removes coal by drilling or cutting horizontally into the coal seam. These machines bring the coal to the surface for stockpiling ...


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contour strip mining coal mining

Contour strip mining Contour mining is commonly practiced where a coal seam outcrops in rolling or hilly terrain. Basically, the method consists of removing the overburden above the coal seam and then, starting at the outcrop and proceeding along the hillside, creating a bench around the hill.


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Strip Mining, Open-pit Mining, Surface Mining, Mining ...

Strip Mining. Strip mining is a kind of surface mining. The ore is very near to the surface of the land but has one or more layers of rock and filth on top of it. To mine the ore, these layers have to be removed. The steps in strip mining are similar to open-pit mining.


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Block Method of Strip Mining

The more vocal critics, indeed, are calling for complete abolition of surface mining for coal. 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.


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Obama Ends 150-Year War of Strip-Mining in 24 States! | Grist

4/1/2010 · Nor is the devastating strip-mining of coal limited to the Appalachian coalfields. Nor is it abating. The war goes on. To be sure: Strip-mining, which provides the lion's share of our dirty coal ...


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Chapter 2: The Environmental Effects of Strip Mining THE ...

 · PDF file

The Mechanics of Strip Mining 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.


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APES Chapter 14 Flashcards | Quizlet

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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More than half of the U.S. coal mines operating in 2008 ...

Contour strip mining accounted for more than half of the surface mine closures between 2008 and 2017. Open-pit coal mining is a combination of contour and area mining methods and is used to mine thick, steeply inclined coalbeds. In contrast to other forms of mining, open pit mines increased in number from 2008 to 2017, but production levels ...


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Contour Mining - YouTube

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Contour strip mining | coal mining | Britannica

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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Basic Information about Surface Coal Mining in Appalachia ...

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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Strip mining | Britannica

Strip mining, removal of soil and rock (overburden) above a layer or seam (particularly coal), followed by the removal of the exposed mineral.. The common strip-mining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type. The cycle of operations for both techniques consists of vegetation clearing, soil removal, drilling and blasting of ...


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Strip Mining of Coal: A Federal Response to State Legislation

 · PDF file

STRIP MINING OF COAL: A FEDERAL RESPONSE TO STATE LEGISLATION There are three methods of surface or strip mining,' each developed for a particular type of landscape, area stripping, contour stripping and auger stripping.2 During the past thirty years, the amount of coal pro-duced by strip mining has quadrupled.'


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Pros and Cons of Strip Mining | APECSEC

For those who are unfamiliar, strip mining is a form of surface mining that focuses on the collection of tar sand and coal, which both rest somewhat close to Earth's surface. Those who support strip mining point to the increased ease of access and all of its attendant benefits. Detractors point to the controversies surrounding this method. The following is a closer examination of the pros ...


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define contour strip mining environmental impact

Contour Farming: farming perpendicular to the slope of a hill or mountain, instead of straight up or down it, to minimize runoff and erosion Including belts of cover vegetation between crops is known as contour strip farming Contour Strip Mining: mining (mainly for coal) by slicing contour bands into a slope...


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MY WORLD WILL COME TRUE: Coal Contour Surface "Strip" Mining

6/6/2009 · The Contour or Bench method of surface or strip mining is usually associated with coal, where a seam or ple 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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STRIP MINING - Coal Sales Online

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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Strip Mining Stock Photos And Images - 123RF

#69582134 - Coal mining in an open pit. Miner looking on the huge excavator... Similar Images . Add to Likebox #39590527 - Coal mine - coal on the palm. Similar Images ... #118666782 - An open Strip Coal mine for energy supplyment. Massive nature.. Similar Images . Add to Likebox #122180120 - Close up of a paw of a cute . ...


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(PDF) COAL MINING METHODS - ResearchGate

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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Plundering Appalachia - The Tragedy of Mountaintop-Removal ...

Mountaintop removal is strip-mining on steroids. Massive dump trucks, huge bulldozers, and ten-story-high draglines can undo in months what geological processes took millions of years to build. Typically, ple coal seams are exposed as a mountaintop-removal operation dismantles the .


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Coal production using mountaintop removal mining decreases ...

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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What is Strip Mining? (with pictures) - wiseGEEK

5/21/2020 · In contour strip mining, strips are dug out around the contours of a mountain, and miners must be more careful to avoid collapses and other problems which can cause injuries or deaths. As one might imagine from the description, strip mining can be extremely disruptive.


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5 Chief Pros and Cons of Strip Mining – ConnectUS

9/24/2015 · 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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Strip Mining Stock Photos And Images - 123RF

#69582134 - Coal mining in an open pit. Miner looking on the huge excavator... Similar Images . Add to Likebox #39590527 - Coal mine - coal on the palm. Similar Images ... #118666782 - An open Strip Coal mine for energy supplyment. Massive nature.. Similar Images . Add to Likebox #122180120 - Close up of a paw of a cute . ...


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Coal Contour Surface "Strip" Mining - Mine .

The Contour or Bench method of surface or strip mining is usually associated with coal, where a seam or ple 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 removal mining. Contour mining allows for the partial ...


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Coal mining - Wikipedia

US4589700A - Strip-auger method of mining thin seams of ...

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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mining Flashcards | Quizlet

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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Basic Information about Surface Coal Mining in Appalachia ...

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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Strip Mining: Methods of Control by the Three Levels of ...

 · PDF file

Strip mining is the process of removing the topsoil, rock and other material (overburden) covering a mineral deposit in order to ex-tract the minerals.1 Strip mining is of two types: contour stripping and area stripping. The method used depends upon the topography of the land.


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