Would like to hear that the easy, cheap option on the left - gravity separation - was being tried. No chemistry involved -just crush and let the ball mill pulverize the ore then separate out the gold on a shake table or wash table - pretty simple if there is free gold in the ore as I understand is the case with the quartz material from the veins. Other ore has to be processed by heap leach.

The ball mill was running and producing gold in 2012 - hope it's still there and operable.