The primary observation is significant as the government was earlier in a fix as to whether mining would be feasible if coal reserves were found deep underground...
The development is significant as it was estimated earlier that coal was deposited much deep under the ground, about 800 meters to 3,000 meters under earth's surface ...
The development, multiple sources said, is vital to initiate the next phase of work to operationalise the coal mine amid protests by a large number of local people...