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  • SURFACE MINING | Coal Mining | The National

    SURFACE MINING | Coal Mining | The National

    Surface mining is classified as contour, area, open pit, and auger. Contour mining is used in hilly or mountainous areas primarily in the East where the coal is recovered from a narrow contour strip, 50 to 100 feet wide, that follows the coal seam around the irregular topogrphy.

  • Block Method of Strip Mining

    Block Method of Strip Mining

    2019-12-29Table of ContentsContour Mining and its Associated ProblemsThe Block MethodAn Illustrated Case Study Surface mining of coal is undoubtedly one of the more controversial aspects of the mineral industries today. There is a constant tug between the need for readily available and inexpensive energy supplies and the desire to minimize disturbance to the land.

  • Coal production using mountaintop removal mining

    Coal production using mountaintop removal mining

    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. This type of mining is sometimes considered a variation of contour mining.

  • Surface Coal Mining - Department of Environmental

    Surface Coal Mining - Department of Environmental

    2019-12-30Strip Mining Layers of soil and rock overburden are removed the coal exposed coal seam is excavated. The area is then backfilled, regraded, and replanted during the reclamation process. Highwall Mining An outcrop of coal is removed by traditional excavators, or by using auger mining drilling directly into the coal to remove the coal seam ...

  • Pros and Cons of Strip Mining - Vision Launch

    Pros and Cons of Strip Mining - Vision Launch

    2015-7-27Strip mining is a form of resource collection that involves dirt removal from a very large area to sift through it. Instead of working underground, a pit is created deep in the ground and all work is accomplished on the surface. Here are the pros and cons of strip mining to consider. Mining happens ...

  • Analysis of strip mining methods and equipment

    Analysis of strip mining methods and equipment

    2019-11-19Large-scale surface coal mining will play a key role in meeting future energy needs of the U.S. Fluor Utah, Inc., with Bonner and Moore Associates, Inc. as subcontractor, was contracted by ERDA to determine and define the problems of large-scale surface coal mining that would be encountered in supplying these energy needs.

  • Auger Mining - MiningInfo

    Auger Mining - MiningInfo

    2019-12-12Auger mining is a method for recovering coal by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest-cost techniques of mining, it is limited to horizontal or slightly pitched seams that have been exposed by geologic erosion.

  • Strip Mining - an overview | ScienceDirect Topics

    Strip Mining - an overview | ScienceDirect Topics

    Another factor that is considered when determining the economics of strip mining is the stripping ratio, which is the ratio of overburden thickness to coal seam thickness. Typically the maximum stripping ratio that is economical is 20 to 1 Schobert, 1987. The two general methods of strip mining are area mining and contour mining.

  • area strip mining Flashcards | Quizlet

    area strip mining Flashcards | Quizlet

    area strip mining. type of surface mining used where the terrain is flat. an earthmover strips away the overburden, and a power shovel digs a cut to remove the mineral deposit. ... contour strip mining. ... cuts a series of terraces into the side of a hill. an earthmover removes the overburden and a power shovel extracts the coal. the ...

  • 5 Chief Pros and Cons of Strip Mining ConnectUS

    5 Chief Pros and Cons of Strip Mining ConnectUS

    5 Chief Pros and Cons of Strip Mining. Sep 24, 2015 Aug 29, 2015 by Editor in Chief. 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. ... West Virginia were once booming coal mining towns. They were ...

  • Strip Mining of Coal A Federal Response to State

    Strip Mining of Coal A Federal Response to State

    2015-9-24STRIP 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.

  • About Us | Contura Energy

    About Us | Contura Energy

    With customers across the globe, high-quality reserves and significant port capacity, Contura Energy reliably supplies both metallurgical coal to produce steel and thermal coal to generate power. Contura Energy is committed to operating safely, efficiently, and responsibly, with customer service second-to-none and an ongoing focus on continuous ...

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

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

    2019-7-1Strip mining contributes to water pollution, air pollution, safety hazards, and destroys the natural beauty of the land. Water pollution is considered the most serious problem caused by strip mining. Coal contains sulfur in various forms. When these sulfur elements are un-

  • Coal production using mountaintop removal mining

    Coal production using mountaintop removal mining

    These techniques include contour mining, where coal is mined on a hillside, and area mining, where coal is mined from relatively flat terrain. Some of these non-MTR methods may be used in conjunction with or following the use of MTR, making attribution of coal production by mining method less obvious.

  • Strip Mining A Policy Evaluation - Berkeley Law Research

    Strip Mining A Policy Evaluation - Berkeley Law Research

    2019-10-301976 STRIP MINING and accounts for 55 of its electric power generation.9 Although coals share of the energy market has been declining throughout this century,0 the future may bring a reversal of this trend. 1 The fundamental fact is that coal represents the largest, most accessible reserve of energy

  • Contour Strip Mining Coal Mining -

    Contour Strip Mining Coal Mining -

    coal mining Wikis The Full Wiki Modern surface mining coal mine in Colombia. 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, or strip mining methods.

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

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

    2019-1-30Contour 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 ...

  • coal mining | Contour strip mining - Students |

    coal mining | Contour strip mining - Students |

    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. In the past, the blasted overburden spoil was simply shoved down the hill currently ...

  • What is Strip Mining with pictures

    What is Strip Mining with pictures

    2019-12-16Strip 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.

  • Environmental Effects of Contour Coal Strip Mining ...

    Environmental Effects of Contour Coal Strip Mining ...

    ew Appalachian Region Appalachian Resources Project Aspects of Coal back-to-approximate-contour back-to-contour fill backfill slope bench areas Big Mary Civil Engineering Department Coal Production Coal Strip Mining contour coal strip developed DOE Contract do East Tennessee Environmental Aspects erosion Figure I-1 Table flows increased ...

  • Strip mining - The Full Wiki

    Strip mining - The Full Wiki

    Strip mining Strip mining is the practice of mining a seam of mineral by first removing a long strip of overlying soil and rock the overburden.It is most commonly used to mine coal or tar sand.Strip mining is only practical when the ore body to be excavated is relatively near the surface.

  • A Review of Highwall Mining Experience and Practice

    A Review of Highwall Mining Experience and Practice

    2018-4-182016 Coal Operators Conference The University of Wollongong 522 10 12 February 2016 A REVIEW OF HIGHWALL MINING EXPERIENCE AND PRACTICE Sungsoon Mo 1, Chengguo Zhang, Ismet Canbulat and Paul Hagan Abstract The highwall mining method originated in the USA in the 1940s. The aim of the method was to recover coal from a surface mine that has reached its economic

  • Basic Information about Surface Coal Mining in

    Basic Information about Surface Coal Mining in

    2017-1-19overburden rock above the coal seam, and interburden rock between coal seams. Overburden and interburden are disposed of in adjacent valleys because the broken rock will not all fit back into the mining pit, and disposal alternatives are limited. The

  • Economic Surface Mining of Multiple Seams

    Economic Surface Mining of Multiple Seams

    2010-10-2classified 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

  • PDF COAL MINING METHODS - ResearchGate

    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

  • Strip Mining | Encyclopedia.com

    Strip Mining | Encyclopedia.com

    2019-12-20Since the worst complications as a result of strip mining occur on hillsides, the environmental price for a limited amount of coal is very high. Hillside mining such as this is called contour mining, in contrast to area mining on relatively flat terrain. In the latter, the number of rows are limited mostly by contractual arrangements.

  • A DEMONSTRATION OF ERTS-I ANALOG AND DIGITAL

    A DEMONSTRATION OF ERTS-I ANALOG AND DIGITAL

    2013-8-31strip mining. For example, coal mining is extremely profitable, and the pro-duct is a needed energy source but, its effects can be devastating. This point was best summarized by Jane Stein 1973. With the improved mechanical methods of strip mining, coal

  • Contour Strip Mining by Carissa Goddeau on Prezi

    Contour Strip Mining by Carissa Goddeau on Prezi

    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 is harmful to the

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

    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.

  • coal mining | Area strip mining - Students | Britannica ...

    coal mining | Area strip mining - Students | Britannica ...

    coal mining - Area strip mining - Area mining, applied where the terrain is flat, commences with a trench or box cut made through the overburden to expose a portion of the coal seam. This trench is extended to the limits of the property in the strike direction. After coal removal, a second cut is made parallel to the first one, and the overburden material from this cut is placed in the ...

  • MINING METHODS |authorSTREAM

    MINING METHODS |authorSTREAM

    Contour Mining Contour strip mining of coal is commonly used in mountainous or hilly terrain where the coal is removed from the outcrop along the face of a hill. The two basic types of removal are cross ridge removal for mountaintop operations and box cut mining on hillsides .

  • Contour Mining Flashcards | Quizlet

    Contour Mining Flashcards | Quizlet

    supplementary coal extraction techniques most often used immediately following contour strip mining Depth of penetration is dependent on the variability of seam thickness, quality of the roof, geology, and equipment used Recovery can vary from 40 to 60

  • STRIP MINING | meaning in the Cambridge English

    STRIP MINING | meaning in the Cambridge English

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