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What is Rat-hole mining? |
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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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