What is rat hile mining
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Rat hole mining is a term used in coal mining and is so named because of its name during colonial times, the sistema del rato, and because of the sizes of the holes. ... The mining is done by digging small holes into the ground, much like the holes dug by rats.
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Rat hole mining is a process of digging holes to make narrow tunnels to extract coal. It is a illegal process which is still practiced in some north eastern region.
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