Twilko, just in case you did not see this post on SI:
To:Jon Matz who wrote (29960) From: Claude Cormier Monday, Dec 2, 2002 11:48 AM Respond to of 29964
<It would seem that block caving would be more similar to open pit, than "underground". > I tend to agree with that. But the critical issue is the delivery system, from inside the mine to the mill.
I understand that MYNG is conveying the materials directly from the mine through the drift right up to the mill. If so, that is very efficient. _______________________________________________________________