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03. What is Rat hole mininig?어어

Answer»

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.

Rat hole mining can be done in two ways:-1.Side cutting :-The tunnel is dug from a side of a hill and this tunnel give access to the miners to extract coal reserves.2.Box Cutting :- Narrow tunnel are dug vertically to the ground and through this tunnel many horizontal tunnel are dug at different height which give access to the miners for coal mining.



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