VANCOUVER, Sept. 17, 2018 /CNW/ - Rock Tech Lithium Inc. (the "Company" or "Rock Tech") [TSX-V: RCK; Frankfurt: RJIB (WKN: A1XF0V)] is pleased to announce geotechnical rock mass rating results. The ...
Underground coal mining in India contributes to a share of 55 Mt production with more than 500 mines in operation. In spite of using the well-established CMRI-ISM Rock Mass Rating (RMRdyn) ...
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