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Opencast Mining Opencast mining is the most common method used throughout the world for extracting minerals (Ha et al, 2011) and commonly produces much waste, due to the removal of large volumes of materials (Anawar et al, 2013; Bini, 2012)

Open Pit Mining Techniques|Surface Mines|Rock or Mineral

Open-pit mining, also known as opencast mining, open-cut mining, and strip mining, means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow The word is used to distinguish this type of mining from extractive methods that need tunneling into the earth

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UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol II - Surface Mining Methods and Equipment - J Yamatomi and S Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2 Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs

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Methods of extraction in Opencast mine - SlideShare

Methods of extraction in Opencast mine 1 Different Methods of Extraction in Opencast Mine Venkat 2 1 3 Assumption - A block consisting of 3 coal seams 4 Coal Seam Over Burden30m Inter Burden Inter Burden30m Not to Scale 5

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Mining Methods |authorSTREAM

Slide 3: Mining Methods Coal is mined by two main methods - surface or ‘opencast’ mining and ‘underground’ mining The choice of method is largely determined by the depth, geology of the coal deposit and other factors

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tonne of coal extracted by surface mining methods damages a surface area of about 4 ha in India 2 The coal industry alone accounts for rendering biologically unproductive area of about 500 ha during 1994-95, which rose to 1400 ha by 2000 AD 3 In the process of opencast mining, the area is to be

Safety and health - International Labour Organization

Safety and health in opencast mines VI The practical recommendations of this code of practice are intended for the use of all those, in both the public and private sectors, who have responsibility for safety and health in opencast mining The code is not intended to replace national laws or regulations or accepted standards

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Coal Mining Methods - EMFI

Coal Mining Methods Underground Mining Longwall & Room and Pillar Mining Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the traditional method in the United States Both methods are well suited to extracting the