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

    Almost everywhere there were surface mines .Surface coal mining in the early twentieth century included contour mining, which removed the top layer of soil to get a coal seam. 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 ...

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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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    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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    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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    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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    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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    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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    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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    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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    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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    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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    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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    contour strip mining coal mining - cycletransportation

    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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    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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    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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    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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    Chapter 2: The Environmental Effects of Strip .

    Surface mining (another name for "strip mining") ... An underground coal mine usually begins much like a contour mine, with a cut into the side of a hill. Indeed, many abandoned surface mines serve as the face for the underground mine. The bench created by the cut often houses the mine office and equipment storage. Several portals are usually dug into the coal seam at the base of the highwall ...

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    STRIP MINING | meaning in the Cambridge English Dictionary

    strip mining definition: 1. a method of obtaining substances such as coal from the ground that involves removing the top.. Learn more.

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    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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