2. The gold mining method-Placer gold mining: by manual methods have existed since long ago. In 1984 started applying extraction scheme and the sale of gold Placer mechanical form of river beach with excavators, air chute and gotten treated to long. Then the diagrams and equipment technology is applied for both types of sa deluvi, proluvi mineral and aluvi.-Original gold mining: iron ore mined from the selective mining craft and was moved out to the dam, mashed in the air dam water hammer. Then it was on to the short chutes, chutes and mercury amalgam favors long to take advantage of currency gold particles born big and the sulfide mineral containing gold. The product contains gold was taken away the stool. To take advantage of currency of gold in ore-chutes and favors national tail in poor ore, starting the popular method of separating, pile Republic split barrel by cyanides. Then use the method by cement zinc powder to recover gold from solution and put away. There's only gold mine Represents the Bong, Vietnam, using methods of the peace Cup by cyanides and gold recovery by activated carbon adsorption or ion exchange resins.
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