difference between open cast and shaft mining
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Drilling is only used in areas that have been selected as " targets" for geophysical or geochemical methods. Open cast mining refers to the extraction of minerals from a shallow depth of the earth. Shaft mining refers to the extraction of minerals by constructing horizontal shafts deep within the earth.Jun 23, 2016
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open cast -----Open cast = Open pit. ... The deepest open pit mine is in theUSA and is 3900 feet deep. It is a copper mine. A shaft mine, also called a deep mine is where you dig holes (shafts) into the ground with branchesoff the shaft (drifts) to reach the coal or ore.
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