MiningBoth RPX and BMK have similar au deposits. These deposits include many bonanza grades deeper than 200 meters, but over very narrow widths. I am not a geo, but I attribute such to the nuggety nature of the deposits. Some deposits appear to be openpittable. I think everyone would be highly appreciative if a real geo would post his idea of how to mine such deep and shallow deposits.. Obviously the au price would affect such methodology.Goldsoldat