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Best Coal Mining Method

the four main methods of mining - oreflow,strip mining – strip mining is the most common surface mining method used to mine coal and lignite. the process is done by removing a strip of overburden before mining a seam of mineral. strip mining is done only when the ore body is in close proximity to the surface..surface mining methods and equipment - eolss,highwall mining is a coal mining method for recovery of outcropped coal by mechanical excavation without removal of overburden. a continuous miner with single or multiple augers/cutting heads is operated underground and controlled remotely by crew located.a mining method for underground extraction of thick and steep coal …,recently, cmri carried out an experimental trial of chamber method of mining with cable bolt as support for controlled winning of roof coal band at n8 panel of bargolai colliery of makum coalfield, nec, assam..major mines & projects | springvale mine,the lithgow seam is presently mined using the longwall retreat method of mining. depth of cover to the lithgow seam, directly above the proposed longwalls varies from 180 m to 420 m. the lithgow seam is a medium-high volatile bituminous coal (30 % vm dry ash-free) of medium rank (0.78 - 0.95 vitrinite reflectance) containing medium ash and low vitrinite content..

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