Dredge Number 4 Historical Site

This huge machine floated on a pond of water with a conveyer belt that dug into the ground down to bedrock. The dirt and rocks were conveyed upwards and crushed and sifted to remove the gold using water. Placer Gold is 19 times heavier and sinks to the bottom so it can easily be extricated using huge amounts of water. The remaining rock and soil are conveyed out the other end to the tailings pile.En savoir plus