Fair that 6.3 or even may be higher is the stope ore but now they choose to mine the orebody in there development going thruogh obviously quite large or barren patches so the head grade may never get much above what it is now. If they go back the other way developing the barren areas and only stopeing the good , well its not much use if it costs as much or more to develop than what you get out in gold. Loose loose situation.
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