rat hole unscientific

  • Where coal is mined via 'rat-holes' | Explained News, The ...

    Dec 20, 2018 · The NGT order bans not only rat-hole mining but all "unscientific and illegal mining". The state has in place the Meghalaya Mines and Mineral Policy, 2012, while clearances and permissions are required under central laws including the Mines and Minerals (Regulation & Development) Act.