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opencast coal mining processes ppt

Mar 13, 2012· • There are two main types ofmines. What isOpencast Mining• Opencast miningis also known asOpen pit mining, Open cutMining, Surface or StripMining.• Thecoalupto economical depth will be excavated by OC Method.• The current operating depth ofOC minesin SCCL is about 200m and SCCL proposed to operate OCmines...

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