Where is the 2.65 ton density per cu metre coming from? This isn't hardrock mining
From the NR...
"Densities of gravels vary widely generally ranging between about 1.4-2.1 tonnes per cubic metre."
Do you really think that a full scale mining operation is going to hand detect for recovery? Its still exploration mate. Its all about systematically defining a resource and working out the best process for recovery. Whether that be gravity, water, CIL, tomra, steinart etc.. Doesn't really matter.
In any case, 0.5g/t free dig at surface will still be highly profitable, if the scale is there.
Where is the 2.65 ton density per cu metre coming from? This...
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