Concentration of Gold Ores a Key to Reducing Mercury Use in .
Jun 3, 2012 . HomeInvestmentsClose . In artisanal gold mining, mercury is essentially used to concentrate the . gold to form a heavy amalgam that is then easily separated from the . accessible to artisanal and small scale gold miners are: panning, magnets, sluicing, spirals, vortexes, centrifuges, shaking tables, and.Get Price