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Images of Mountaintop Removal Mining | Earthjustice

Mountaintop removal coal mining, often described as "strip mining on steroids," is an extremely destructive form of mining that is devastating Appalachia. In just a few decades, more than 2,400 miles of streams and headwaters that provide drinking water for .

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

All surface or strip mining first removes the overlying vegetation, soil and underground rock layers in order to expose and extract coal from an underground seam or coal deposit. Responsible surface mining attempts to limit the side effects of this removal through several basic steps:

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What is Strip Mining? - Definition from Safeopedia

Strip mining is a mineral-extraction process in which a layer or seam of undesired material (called "overburden") is removed from the surface of an area to allow efficient access to a desired material existing underneath the layer being stripped.

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Coal mining - Choosing a mining method | Britannica

Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many .

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Southeast Kansas Coal Mining - Pittsburg - KS - US ...

Pioneer mining was done on the surface with picks and shovels, mule-drawn wagons, and scrapers. Early strip mining was unsophisticated and crude, but it was productive for workers. They mostly worked along the parts of the seam where the overburden was .

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Strip Mining Pit and Shovel | McBoford Photography

Surface mining is feasible for certain areas because veins or seams of coal lie relatively close to the earth's surface. The thickness of the ground (overburden) above the coal is usually no more than 100 to 150 feet. In this pit, the shovel "strips" the overburden from above the coal seam. The overburden is pushed to the side of the excavation (left) forming mounds or spoil banks.

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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 .

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Glossary of Mining Terms - coaleducation

Abutment - In coal mining, (1) ... angle is assumed to bisect the angle between the vertical and the angle of repose of the material and is 20° for flat seams. For dipping seams, the angle of break increases, being 35.8° from the vertical for a 40° dip. ... Cast - A directed throw; in strip-mining, the overburden is cast from the coal to the ...

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Meta land scars (tattoos) from strip mining large seams of ...

Meta land scars (tattoos) from strip mining large seams of coal (Update: I learned from a comment by William Oldani in a post that the accepted term for what I have been calling land scars is "tattoos." I can't fix all existing occurrences of "land scar" in this blog, but I .

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CH 15 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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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 ...

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Coal mining - Wikipedia

When coal seams are near the surface, it may be economical to extract the coal using open cut (also referred to as open cast, open pit, mountaintop removal or strip) mining methods. Opencast coal mining recovers a greater proportion of the coal deposit than underground methods, as more of the coal seams in the strata may be exploited. This equipment can include the following: Draglines which ...

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Economic Surface Mining of Multiple Seams - saimm

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 where the seams oceur in .

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Appalachia comes up small in era of giant coal mines ...

Appalachia comes up small in era of giant coal mines ... coal seams as thick as 70 feet or more. ... The key piece of equipment in strip mining is a mobile dragline excavator, which scrapes away ...

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What is strip mining - answers

Strip Mining is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock.

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Colliery: How Coal Mining Works? - scienceabc

Strip mining and mountaintop removal are two popular surface mining strategies when coal seams are located close to the surface of the earth. Strip Mining. In strip mining, the first step is to strip off the vegetation and soil in the vicinity of the surface to be mined for coal. The large intermediate layer of sediment and rock, i.e., the ...

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Coal in Pennsylvania

coal-mining operations has caused extensive pollution of streams and loss of fish and other wildlife. Mining also results in disruption of groundwater resources, soil erosion, and scarring of the land. Abandoned piles of waste material left behind from coal mining and coal processing blight many

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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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Pittsburg Scenes - Mining

The Mount Carmel Coal Mining Company was founded by Charles J. Devlin. The company owned and operated several other mines besides theirs including those of the Cherokee and Pittsburg Coal and Mining Company and the Osage Carbon Company. Devlin also donated 5 acres of land and $5,000 to the Sisters of St. Joseph for a hospital in 1898.

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Coal in Pennsylvania

coal-mining operations has caused extensive pollution of streams and loss of fish and other wildlife. Mining also results in disruption of groundwater resources, soil erosion, and scarring of the land. Abandoned piles of waste material left behind from coal mining and coal processing blight many

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Strip Mines - University of Tennessee

Strip mining reduces hills, farms, and forests to bare earth, caked mud, protruding rock, subsiding land, and flowing silt on a geological scale. The mines are not as bad as they once were. The federal Surface Mining Control and Reclamation Act of 1977 outlawed some of the worst abuses. Yet strip-mining is inherently destructive, even if the ...

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