explain the process of underground surface mining

  • What is the difference between underground mining and ,

    Surface mining is MUCH less expensive than underground mining Usually In some cases, underground mining is used because the substance being mined is just too deep to have a surface ,

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  • What Is Subsurface Mining? | Reference

    What Is Subsurface Mining? Subsurface mining is the removal of deposits from the earth by drilling underneath layers of rock and dirt These deposits are difficult to reach from the surface and require the drilling of vertical or horizontal shafts for access

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  • Understanding the Tungsten Extraction Process: Surface and ,

    Nov 16, 2017· The entire body of material is mined with no overburden being placed back into the void during the entire extraction process With open pit mining, strip mining and dreading operations work as well Underground mining Sub-surface mining (underground mining) is the way to go when the open pit mining operation becomes far too expensive Mining .

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  • The Difference Between Underground Mining And Surface Mining

    Apr 21, 2014· The Difference Between Underground Mining And Surface Mining 1 The Difference Between Underground Mining And Surface Mining The process of removal of essential mineral ores or geological substances from soil or sand is called mining These minerals are of great value and are abundantly available in rocks and earth’s surface

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  • What Is Surface Mining? | Convergence Training

    Common Equipment Used in Surface Mining There’s a specialized and diverse set of equipment commonly used during the surface mining process If you’re going to work at a surface mine, it helps to know the names of the following equipment and what they’re used for

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  • What is Surface Mining? (with pictures) - wisegeek

    Jun 21, 2019· Surface mining is a method of mining used to extract minerals and metals which are near the surface of the Earth There are three basic types of surface mining: open pit mining, strip mining, and quarry miningThese methods are much more economical than underground mining, yet they can have a more significant impact on the surrounding environment unless efforts are taken to ,

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  • Earth final- Mineral resources Flashcards | Quizlet

    Compared to underground mining, surface mining is generally less expensive, safer for miners, and facilitates more complete recovery of coal Surface mining causes more extensive disturbances to the land and has the potential for serious environmental consequences unless the land is carefully reclaimed

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  • The Mining Process | Introduction | underground COAL

    The Mining Process Once a mining lease has been awarded to an operator, exploration (ie evaluation of the resource) takes place, followed by a planning and development process before excavation or mining begins The initial task is to gain access to the seam from the surface by some means (shafts, drifts, etc – see Access to Seam from .

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  • Coal Mining and Processing - The National Academies Press

    The productivity of surface mines is generally higher than that of underground mines , and health and safety statistics for surface mining are also generally better than those of underground mining Surface-mined coal from the Powder River Basin is usually simply sized and screened in preparation for market, whereas underground-mined coal and .

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  • Coal Mining and Processing | Energy Trends Insider

    Surface mining is used to produce most of the coal in the US because it is less expensive than underground mining Surface mining can be used when the coal is buried less than 200 feet underground In surface mining, giant machines remove the ,

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  • How is coal mined? - What is Surface Mining and ,

    Feb 19, 2013· Mining is the process of removing coal from the ground There are two types of mining: underground mining and surface mining When the coal seam is fewer than 125 feet under the surface, it is .

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  • The Mining Process | Introduction | underground COAL

    The Mining Process Once a mining lease has been awarded to an operator, exploration (ie evaluation of the resource) takes place, followed by a planning and development process before excavation or mining begins The initial task is to gain access to the seam from the surface by some means (shafts, drifts, etc – see Access to Seam from .

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  • Underground mining (hard rock) - Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubi

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  • Surface mining - Wikipedia

    Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels

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  • Surface Mining, Industry of Metals, Minerals, Precious ,

    Surface mining is a form of mining in which the soil and the rock covering the mineral deposits are removed It is the other way of underground mining, in which the overlying rock is left behind, and the required mineral deposits are removed through shafts or tunnels Surface mining is basically employed when deposits of commercially viable minerals or rock are found closer to the surface .

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  • What are the main methods of mining? | American ,

    What are the main methods of mining? PDF version There are four main mining methods: underground, open surface (pit), placer, and in-situ mining Underground mines are more expensive and are often used to reach deeper deposits , Webpage describing the process and history of placer mining for gold; Related Frequently Asked Questions

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  • Extraction of Resources | Geology

    Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) mining Today, surface mining is much more common, and produces, for example, 85% of minerals (excluding petroleum and natural gas) ,

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  • Coal mining | World Coal Association

    Coal mining is only a temporary use of land, so it is vital that rehabilitation of land takes place once mining operations have stopped In best practice a detailed rehabilitation or reclamation plan is designed and approved for each coal mine, covering the period from the start of operations until well after mining ,

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  • Effective factors investigation in choice between surface ,

    Keywords: effective factors, choice, surface mining, underground mining INTRODUCTION The decision as to whether mining will be on the surface or underground must be made before the land zoning and permitting process begins for the proposed mine site [1]

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  • Underground vs Surface Coal Mines: Is Deep Drilling ,

    The method is differentiated by whether the seam is relatively close to the surface area or buried deep below An array of underground and surface mining techniques exist, however, technical and economic feasibility studies are required to determine which process is best

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  • How Underground Mining Works - HowStuffWorks

    There are hard-rock underground mines, and there are soft-rock underground min Coal deposits, for instance, live in relatively soft sedimentary rock Gold deposits live in igneous or metamorphic rock, which is relatively hard, as do diamonds, copper, silver, nickel and zinc [source: Great Mining .

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  • Mining - Underground mining | Britannica

    Mining - Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered Counting against underground mining are the costs, which, for each ton of material mined, are much higher underground than on the surface

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