SG Mining.docx - Understanding Mining Study Guide Extraction Complete the following table(Do not try to fit the answers in the small space Mining

SG Mining.docx - Understanding Mining Study Guide...

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Understanding Mining Study Guide Extraction Complete the following table (Do not try to fit the answers in the small space) Mining Extraction Methods Description Ecological Problems 1. Open pit mining Open pit mining is a surface mining technique in order to extract rock or minerals from earth using an open pit of borrow. - Produces toxic runoff that can go into waters - Creates large amounts of dust pollution - Destroys flora and fauna 1. Strip mining Strip mining is a type of surface mining, typically employed for the recovery of materials such as coal and tar sand, which are relatively near the earth’s surface. - Kills Flora and fauna - Can make land more prone to flooding and erosion - Could make water sources more contaminated 1. Placer mining Placer mining is the mining for alluvial deposits for minerals. - Forest fires and landslides are more likely to occur - Can lead to the reduction of fish growth 1. Shaft mining Shaft mining is the method of excavating a vertical (or close to) from the top down, where initially there is no access to the bottom - Destroying tunnels can affect habitats for organisms 1. Mountaintop Removal Mountaintop removal is a form of surface mining involving the mining of the summit (or summit ridge) of a mountain. - Trees are cut in order for this to work - May cause toxic runoff into streams 1. In-situ/solution mining In-situ/solution mining is used to recover minerals including copper and uranium through boreholes drilled into a deposit. - Comes with the risk of leaching the liquid outside the uranium deposit - Can’t restore groundwater 1. Overburden Overburden is the material lying above an area of economic or scientific interest -- in mining mostly the rock, soil, and ecosystem above a coal seam of ore body. - Distinct from tailings, however it is not contaminated with toxic components
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1. Acid mine drainage Acidic mine drainage is the outflow of acidic water from (normally abandoned) metal mines or coal mines. - Disrupts growth/reproduction of aquatic organisms - Water can become contaminated 1. Tailings Tailings is the materials left after the valuable fraction had been separated from the uneconomic fraction of an ore. - May contain hazardous materials such as lead and uranium which can end up running off into the environment Processing
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  • Spring '18
  • English, General Mining Law, Collapse Mining

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