Ann: Intersections of Bonanza High Grade Gold Plus Visible Gold,EVN-ERM.AX, page-69

Hi guys,
Am I right in saying that whatever material finds its way into the supergene zone (if it exists) was initially in the primary zone. If that's the case, it's not so much the amount of gold which is the issue but the ease with which you can get to it. Is this in any way accurate or do I have it totally wrong?

Can anyone give me an indication as to the difference in costs mining downshaft as opposed to mining lateral deposits? Is the presence of that supergene zone a requirement for viability or just the cream on top of an already promising find?