funny they spent $ 400,000 on the excavator but only $ 1000 on the process plant
i reckon 10 % losses before the wash even gets to the sluice
and they probably miss 30 % of the gold bearing ore coz they are dumping tailings back on top of it
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this is relocatable , they can dig down and feed straight into the feed hopper , the tailings fall straight back in the same hole and the excavator keeps working forwards and drags the plant with it