looking at ball mill vid IMG 2470 Impressive. The rate of feed is substantial for the size of the ball mill. Finely tuned. I can see a quiet revolution in the small mining space. The out of the way locations that would cost a fortune just to ship all material to a big plant. All you need is power and a 2-300 tpd mine of vein structure becomes feasible. Graeme is a pioneer in his plan.