GREY:GBRIF - Post by User
Comment by
fungi294fron Jun 28, 2012 2:55pm
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Post# 20065375
RE: RE: RE: RE: fungi...gee 'stockwatcher/lowtooth
RE: RE: RE: RE: fungi...gee 'stockwatcher/lowtooth RC drilling
https://www.atlascopcoexploration.com/1.0.1.0/354/TS5.pdf
In the late 1990s, gold processing improved, viable ore grades became lower, but mining costs were higher, so many mines looked to improve their ore selection processes.One of the easiest ways to do this wasgrade control drilling, and RC drilling was the most cost efficient and accurate
method available.As a result, RC drilling is now being used for initial exploration, ore body development drilling, and in pit grade control drilling
RC drilling provides virtually uncontaminated cuttings to the cyclone. As the cuttings travel directly from the drill bit through the steel inner tubes and sample hose, there is no cross contamination from other areas of the hole. Using good sample splitters and sampling procedures, RC results rival the accuracy of diamond core assays