I would be interested to know if any out there has a handle on what constitutes a viable and profitable grade for a resource. Obviously recoverable depth, distance to the mill, price to ROM all come into it. Looking at all the drill results from the miners they vary in tone and content.
My take on it so far is
0 - 300m depth
1.5 - 2gt low grade
2gt - 4gt medium grade
4gt - + high grade
Any takers?
