There is no way to come up with a figure of 40m ounces at this stage of the game. Why not 50m? or 35m? Even 3m or 4m is still just speculation right now. Drill results will determine these expectations.
I'm not about to put much weighted value in Mr. Mason's statement. It may have been a slip of the tongue, or maybe something more. My point is he wouldn't have anymore information then we do. There simply hasn't been enough information uncovered yet.