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

    Coal Contour Surface "Strip" Mining . 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.Surface mining Wikipedia,"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 and lignite (brown coal).Strip mining is only practical when the ore body to be excavated is relatively near the surface.

  • 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.Surface Coal Mining,Surface Coal Mining. The primary methods of surface coal mining used in Pennsylvania are: Strip 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.

  • Earth Science: Surface Mining.

    Strip Mining is used when coal is near the surface of when the overburden is unstable. As mining progresses, the overburden is placed in the previous mine cavity. The mining is done in long, narrow strips. The waste, dirt, and rock that they take off of the top of the next strip is to put on top of the last one. Explosives are put in holes andStrip 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

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

    The most economical method of extracting coal depends upon the depth and the quality of the coal seams. Coals are mined both from surface and underground. Contour mining is associated with coal. This bed of coal is located at an elevation in a mountain range or any other hilly area. It is a method of strip or surface mining.Surface Mining Animation YouTube,Jan 20, 2014· See what Vermeer surface mining equipment can do for you. Patented tilting capability Vertical wall capability Mine in layers Selective piling Sele.

  • Basic Information about Surface Coal Mining in Appalachia

    Layers of rock and dirt above and between the coal seams are removed. Coal seams are removed with excess soil and rock placed in an adjacent valley. Large scale earth moving equipment is used to excavate and remove coal from lower layers. The equipment used depends on the method and scale of the surface mining method being employed.Strip Mining an overview ScienceDirect Topics,Surface mining of coal is an alternative to underground mining, and it is practiced as strip mining, the most common form, and auger mining. Some coal is also produced through dredging and culm bank (i.e., anthracite waste piles) recovery, but these quantities tend to be relatively small compared to underground, strip, and auger mining.

  • Coal mining Wikipedia

    Mountaintop coal mining is a surface mining practice involving removal of mountaintops to expose coal seams, and disposing of associated mining overburden in adjacent "valley fills." Valley fills occur in steep terrain where there are limited disposal alternatives. Mountaintop removal combines area and contour strip mining methods. In areasSurface Mining Test 2 Flashcards Quizlet,Start studying Surface Mining Test 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools. done immediately after contour strip mining. Contour (Auger/Highwall) Depth of Penetration is dependent on seam thickness works well when upper coal surface is a roadbed easy to maintain pit floor grade

  • 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 undergroundCoal 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. This type of

  • Pros and Cons of Strip Mining APECSEC

    Feb 25, 2015· 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.Earth Science: Surface Mining.,Strip Mining is used when coal is near the surface of when the overburden is unstable. As mining progresses, the overburden is placed in the previous mine cavity. The mining is done in long, narrow strips. The waste, dirt, and rock that they take off of the top of the next strip is to put on top of the last one. Explosives are put in holes and

  • Underground v.s. Surface Coal Mines: Is Mining Global

    Trucks and shovels are used to remove excess fragments as a drill systematically bores into the mine, stripping it of coal, typically recovering a higher proportion of the coal deposits than underground mining. Strip mining is sensible when the ore body is near the surface.Contour Surface Mining Test West Virginia Coal Association,Active Contour Surface Mine in West Virginia with Initial Reclamation Visible in Distance As coal removal proceeds around the mountain side, the excavated material from new overburden cuts is used to backfill the previous mining area to restore the pre-mining contours of the land or Approximate Original Contour

  • Plundering Appalachia The Tragedy of Mountaintop-Removal

    Coal mining is far and away the largest industrial consumer of explosives in the United States. According to government figures for 2005, more than 1.8 billion pounds of high explosives were used in West Virginia and Kentucky alone, primarily in surface-mining operations.5 Chief Pros and Cons of Strip Mining ConnectUS,Sep 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.

  • 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.Obama Ends 150-Year War of Strip-Mining in 24 States! Grist,Apr 01, 2010· Obama Ends 150-Year War of Strip-Mining in 24 States: Mountaintop Removal Loses Its Groove. Yeah, I’ve been wanting to wake up to that headline for years, too. Instead, I read another Coal

  • 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 continuousContour Surface Mining Test West Virginia Coal Association,Active Contour Surface Mine in West Virginia with Initial Reclamation Visible in Distance As coal removal proceeds around the mountain side, the excavated material from new overburden cuts is used to backfill the previous mining area to restore the pre-mining contours of the land or Approximate Original Contour

  • 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.Earth Science: Surface Mining.,Strip Mining is used when coal is near the surface of when the overburden is unstable. As mining progresses, the overburden is placed in the previous mine cavity. The mining is done in long, narrow strips. The waste, dirt, and rock that they take off of the top of the next strip is to put on top of the last one. Explosives are put in holes and

  • Minerals and mining vocabulary Flashcards Quizlet

    Coal Contour Surface "Strip" Mining. 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.(PDF) Mining Methods: Part I-Surface mining,Mining Methods: Part I-Surface mining. Contour strip mining. this work quantitatively and qualitatively investigated the effect of open-pit coal mining operations on rice paddy soils and

  • Economic Surface Mining of Multiple Seams

    Economic Surface Mining of Multiple Seams By THOMAS V. FALKIE' :md WlLLIAM E. PORTERt SYNOPSIS A, Xeological and mining conditions become more complex, and as overall mining economics become more marginal, short-and long-range decision-making regarding muIliple-scam surface mining becomes more difficult.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.

  • Plundering Appalachia The Tragedy of Mountaintop-Removal

    Coal mining is far and away the largest industrial consumer of explosives in the United States. According to government figures for 2005, more than 1.8 billion pounds of high explosives were used in West Virginia and Kentucky alone, primarily in surface-mining operations.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.

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

    Apr 01, 2010· Obama Ends 150-Year War of Strip-Mining in 24 States: Mountaintop Removal Loses Its Groove. Yeah, I’ve been wanting to wake up to that headline for years, too. Instead, I read another Coal(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

  • Surface mining : definition of Surface mining and synonyms

    "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.Strip mining is only practical when the ore body to be excavated is relatively near the surface.SURFACE MINING Coal Mining The National Academies Press,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.

  • Kentucky Statutes > Chapter 350 Surface Coal Mining

    Operations: means surface coal mining operations, all of the premises, facilities, roads, and equipment used in the process of producing coal from a designated area or removing overburden for the purpose of determining the location, quality, or quantity of a natural coal deposit or the activity to facilitate or accomplish the extraction or the,