coal mining opencast

  • 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.

  • Interactive Map Viewer | Coal Authority

    Coal Mining Theme - Higher Resolution Data The data available through the Higher Resolution Tab of the Interactive Viewer can be viewed at a scale larger than 1:25,000. This information is provided pursuant to the Environmental Information Regulations 2004 ("EIR"), and subject to the exemptions therein.

  • What Are the Disadvantages of Opencast Mining ...

    A: Opencast mining, also known as surface mining or strip mining, has disadvantages that include disturbance of the environment and local ecosystems, exposure of radioactive elements and contamination of freshwater sources. The use of heavy machinery and blasting techniques also create environmental pollution. Continue Reading.

  • Opencast Mining - an overview | ScienceDirect Topics

    Mining, especially opencast mining, is an intensive process. Unless planned properly it can result in enormous environmental degradation of the mined area. The environmental effects of mine waste include (a) Release of toxic metals (b) Damage to heritage (c) Air, water, soil pollution (d) Sulfide minerals and acid drainage

  • Opencast Coal Mining Training (Full concept) - YouTubeClick to view27:09

    Jul 31, 2015 · Dangerous Hazard Tree Felling in Wildfires, Lumberjack Tree Cutting Down with Chainsaw Machine - Duration: 14:09. Machinery Presents 1,798,105 views