Look at it this way. High grades are usually in small viens over small intervals. Yes there is some that arent and that is here some very big mines are. But to put it simply if you have 15g/t over a 50m area and only 10m deep. You would have x amount. But the good thing about low grades they are usually found in diseminated areas so they are over long intervals and over a wide area. Eg 2g/t over a 250m area and 100m deep. You get alot more gold in the second example. The second example is what the JJJ is... If someone else has a better explanation pleas chime in.. Or if I said something stupid.. :) TTY