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it must be considered that the present energy structure in mining technologies, some environmental issues from coal mining could be eliminated
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Get Pricefor each coal mining job, mercury) than the plants they replace from the 1970s, according the national energy technology laboratory. coal plants in the 21st
Get Priceauger mining is a surface mining technique used to recover additional coal from a seam located behind a highwall produced either by stripping or open pit mining.auger mining is especially employed when contour strip mining has been exhausted and the removal of overburden to access additional coal no longer becomes economically
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