By looking at there set up that they had small crusher and short head crushers then it screens it and then to a ball mill which will crush the ore to somewhere around 8 times finer than beech sand. then you run that through a floation cell and each metal will float out at a different level in the floation, and then what left is sent into a turbo type of pump that well spin off metal buy there weight so there is really no need to leach anything, The water that we released from the climax mine was clean enough to drink. Sorry I did not get back earlier but I had to go up to Colorado Springs to eat at the spicy pickle SPKL one of my fav next to AURC.
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