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Artisanal and Small-Scale Gold Mining Without Mercury - EPA

May 1, 2017 ... Miners must pay attention to the amount of water flow going into the tub. If it is too great the velocity of the water will carry gold particles out of bowl and this will lead to losses of gold. When vortexes are operated correctly, the result is a fine gold concentrate that is usually very high grade. Vortexes are easy...

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Final Clean-up and Recovery of Your Gold - Gold Prospecting

There are several types of final clean-up devices on the market which can help you process the final concentrates, including different kinds of wheels, bowls and miniature sluicing systems. They all work pretty ... Once the concentrates are poured onto the paper, it is easy to separate the pieces of gold from the impurities.

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