Rift Valley Resources Ltd's drilling targets large NdPr resource at .Aug 28, 2018 . Rift Valley Resources Ltd (ASX:RVY) - The new drilling program will determine the . begun a reverse circulation (RC) drilling program targeting a large tonnage, high-grade NdPr resource at the Longonjo project in Angola. .. Cabral Gold making progress with application for mining licence at Brazil project.rc driller angola exploration mining resources,Reverse Circulation (RC) Drilling: Theory, Mechanisms and ..atlascopcoexploration/184.108.40.206/354/TS5.pdf. Marjoribanks, R.W. Geological Methods in Mineral Exploration and Mining.
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