flow map for gold processing 5th grade « BINQ Mining
Apr 28, 2013· Gold mining – Wikipedia, the free encyclopedia. Gold mining is the process of mining of gold or gold ores from the ground.. was mined to a depth of 50 metres (160 ft) during the Gupta period in the fifth century AD. . The box is placed in the stream to channel water flow. .. It is particularly appropriate for low grade gold and silver ore processing ( less than 5 ppm .