Hi,
I agree with miningio.
However, there is a possiblity of mineralisation plunging deeply. If you move 50m east/west you could have a 100metre change in thickness (like at Hope Downs). There is currently no evidence of this.
The questions I have are:
If you have a 20metre thickness resource, starting at 40metres below ground...
a) What is the mining strip ratio? 2:1?
b) Is this economical?
Joel