with gold prices surging comes a new surge in gold mining in the far north. the anchorage daily news is reporting that gold production in alaska has reached its highest levels since the rush of a
in the guianas the most popular form of small-scale gold mining is referred to as “land dredging” a combination of hydraulicking and suction dredging. this method requires application of large volumes of water for both mining and mineral processing; in most cases there are no containment structures for the waste tailings generated.
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slurry from the grinding circuit at approximately 35% solids and 80—85% passing 135 mm is pumped to three thickeners. thickener underflow at approximately 54% w/w solids is pumped to a train of four acidulation tanks. sulfuric acid is added to the slurry to destroy sufficient carbonate prior to entering the autoclave circuit. process air is also injected into the acidulation tanks to aid
in august 2017 different sects within the bitcoin mining community had a disagreement about the rules governing the mining process -- specifically what constitutes the appropriate size (in