contour strip mining coal mining

contour strip mining coal mining

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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Coal Contour Surface "Strip" Mining - Mine Engineer.Com

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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Strip Mining - an overview ScienceDirect Topics

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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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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What is Strip Mining? Methods and Impact Environment Buddy

Jan 17, 2021  Contour Mining. The contour method is used practically solely in the Appala­chian region of North America, where coal seams protrude from the sides of hills or mountains. Contour mining entails making cuts on the slant/angle where the coal seam is traced, to take away the overburden first and then the coal itself.

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Open-pit Mining, Opencast Mining, Open-cut Mining, Strip ...

But after World War II surface coal mining was enveloped by auger mining, which is a normal part of contour operations. Surface mining was referred to as strip mining or stripping or sometimes as surface mining itself. They often failed to differentiate these different methods of mining. Sometimes it was also called contour mining as it was the ...

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

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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Coal mining - Wikipedia

Coal extraction methods vary depending on whether the mine is an underground mine or a surface (also called open cast) mine. Additionally coal seam thickness and geology are factors in selection of a mining method. The most economical method of coal extraction for surface mines is the electric shovel or drag line. The most economical form of underground mining is the long wall, which is a shear blade that runs along sections of the coal seam. Many coals extracted from both surface and underground mines requir

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Contour Strip Mining Coal Mining Sale

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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Coal mining - Choosing a mining method Britannica

Auger mining is usually associated with contour strip mining. With this method, the coal is removed by drilling auger holes from the last contour cut and extracting it in the same manner that shavings are produced by a carpenter’s bit. Coal recovery rates approach 60 percent with this method.

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Open-pit Mining, Opencast Mining, Open-cut Mining, Strip ...

But after World War II surface coal mining was enveloped by auger mining, which is a normal part of contour operations. Surface mining was referred to as strip mining or stripping or sometimes as surface mining itself. They often failed to differentiate these different methods of mining. Sometimes it was also called contour mining as it was the ...

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14.3 Open Cast (Strip) Mining - 1of 2

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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Contour strip mining is used mostly to mine coal on hilly ...

–Contour strip mining is used mostly to mine coal on hilly or mountainous terrain. • Mountaintop removal uses explosives, large power shovels, and huge machines called draglines to remove the top of a mountain and expose seams of coal. • Subsurface mining removes minerals from underground through tunnels and shafts. - Mining has harmful environmental effects • Scarring and disruption ...

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

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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(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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3 Methods of Coal Mining - EzineArticles

Once coal is extracted, the topsoil is then replaced and native trees and vegetation is planted to restore the original condition. There are three different types of surface mining: contour, strip, and mountaintop removal mining. 1- Contour Mining: Contour Mining is most commonly used in areas that have steep or rolling terrain. It involves ...

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Economic Surface Mining of Multiple Seams

classified either as area or contour mining .. Area strip-mining is practiced on relatively flat terrain. A 'box cut' is made through the overburden to expose the top coal seam. Successive parallel cuts ore then made and the overburden spoiled in the previous cut. Contour strip-mining is practiced 177

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Types of Surface Mining American Mine Services

Contour mining is a version of strip mining that follows the contours of outcrops and hilly terrains. Usually, the mineral seam follows the contour of the outcrop, and the overburden is removed carefully along the seam in much smaller and custom shaped excavations rather than long strips.

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Contour Highwall Mining - Energy and Mining Magazine

Contour Highwall Mining looks for new opportunities to help coal mining operations worldwide. By Chris Petersen. The energy market in the United States has been in a state of flux for the last few years as the federal government has attempted to focus on alternatives to traditional fuels like coal.

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Contour Mining and Construction General Contractor in ...

We are poised to forge a new standard in the mining and site development industries. Contour is headquartered in Columbia, South Carolina, and we are able to mobilize on any project in the Southeast. We are a licensed general contractor with unlimited status in South Carolina and North Carolina, and we are bonded for jobs in excess of $20,000,000.

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Coal Surface Mining - Materials101

Mar 15, 2021  Auger Mining(Courtesy: Auger Mining ~ Auger Tool Image) In this mining method used in conjunction with the above methods primarily contour strip mining. In this method, auger holes are drilled to extract the coal seam from the last contour cut. To put it in prospective it is similar to the shavings of a carpenter’s bit.

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What Are the Pros and Cons of Strip Mining? (with pictures)

Feb 22, 2021  Andrea Cross Date: February 22, 2021 Strip mining is used to recover resources that are close to the surface.. Strip mining is a form of surface mining that is usually employed for the recovery of materials such as coal and tar sand, which are relatively near the surface of the earth. Surface vegetation, soil, and rocks are removed in strips, often in conjunction with controlled explosions, to ...

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Contour Strip Mining by Carissa Goddeau - Prezi

Contour Strip Mining Carissa Goddeau Avery DeBoer It is hazardous to human health Linked to birth defects, heart disease, and cancer in communities that are affected by fallouts Fallout contain millions of pounds of mining explosives, silica dust, and pulverized heavy metals It

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Contour Mining Flashcards Quizlet

Contour Strip Mining -used in areas where a coal seam outcrops on the side of a hill, but the economics do not permit the complete removal of the overburden -Mining proceeds along the outcrop in a strip or series of strips until the economic limit of stripping is reached

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14.3 Open Cast (Strip) Mining - 1of 2

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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Commonly used mining techniques to extract coal IEA ...

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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3 Methods of Coal Mining - EzineArticles

Once coal is extracted, the topsoil is then replaced and native trees and vegetation is planted to restore the original condition. There are three different types of surface mining: contour, strip, and mountaintop removal mining. 1- Contour Mining: Contour Mining is most commonly used in areas that have steep or rolling terrain. It involves ...

More

Economic Surface Mining of Multiple Seams

classified either as area or contour mining .. Area strip-mining is practiced on relatively flat terrain. A 'box cut' is made through the overburden to expose the top coal seam. Successive parallel cuts ore then made and the overburden spoiled in the previous cut. Contour strip-mining is practiced 177

More

Types of Surface Mining American Mine Services

Contour mining is a version of strip mining that follows the contours of outcrops and hilly terrains. Usually, the mineral seam follows the contour of the outcrop, and the overburden is removed carefully along the seam in much smaller and custom shaped excavations rather than long strips.

More

Contour Strip Mining by Carissa Goddeau - Prezi

Contour Strip Mining Carissa Goddeau Avery DeBoer It is hazardous to human health Linked to birth defects, heart disease, and cancer in communities that are affected by fallouts Fallout contain millions of pounds of mining explosives, silica dust, and pulverized heavy metals It

More

Contour Mining Flashcards Quizlet

Contour Strip Mining -used in areas where a coal seam outcrops on the side of a hill, but the economics do not permit the complete removal of the overburden -Mining proceeds along the outcrop in a strip or series of strips until the economic limit of stripping is reached

More

Contour Highwall Mining - Energy and Mining Magazine

Contour Highwall Mining looks for new opportunities to help coal mining operations worldwide. By Chris Petersen. The energy market in the United States has been in a state of flux for the last few years as the federal government has attempted to focus on alternatives to traditional fuels like coal.

More

What Are the Pros and Cons of Strip Mining? (with pictures)

Feb 22, 2021  Andrea Cross Date: February 22, 2021 Strip mining is used to recover resources that are close to the surface.. Strip mining is a form of surface mining that is usually employed for the recovery of materials such as coal and tar sand, which are relatively near the surface of the earth. Surface vegetation, soil, and rocks are removed in strips, often in conjunction with controlled explosions, to ...

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Coal Controversy In Appalachia - NASA

Surface mining at these scales is more economical for coal companies, safer for miners, and, coal operators say, essential for mining the thin seams of lower-sulfur coal more valuable in today’s market. With dynamite and immense machines, surface mines can produce more than two to three times as much coal per miner as underground mines can.

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

These radical strip-mining operations not only obliterate the former habitat and homes of innumerable wild creatures, they also reshape the very contour of the horizon. The familiar curves and folds of the landscape, the mountains that have anchored communities for generations, are simply gone.

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Major Mines Projects Logan Mine

Two underground mines produce high-volatile metallurgical coal using room and pillar retreat mining methods using continuous miner equipment. The surface mine produce thermal coal with a combination of contour strip area mining and point removal methods.

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

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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Kentucky strip mining The Pop History Dig

Nov 08, 2013  Strip Mining. Strip mining in Kentucky and elsewhere had gone on for decades before Harry Caudill arrived on the scene, but after World War II the technology had moved well beyond the “pick-and-shovel” stage. In eastern Kentucky especially, the practice of “shoot and shove” contour strip mining was notorious. Miners gouged into hillsides with mechanized shovels and dozers, establishing ...

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