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surface al mining process in indonesia ppt

surface al mining process in indonesia ppt

Mar 29, 2014· Two types ofmining methods:-Surface Mining: 1.Alluvial mining2. Open-castminingUndergroundmining. 4. A method of extracting minerals by dredging alluvial deposits. Different methods : Pan & Batea : In this manual method, The softaluvialmaterial dug up, is place in the Pan or Batea, and washed. Fig :Alluvial miningusing a pan

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