Anyone with time could probably try to calculate the tonnage. YML/BRM to date have used about 2.8tonnes per cubic metre (58% Fe).
So if you want to figure out how much the overburden equates to in tonnage it's length x width x depth x SG value (2.8 for 58% Fe - no idea for 40% probably about 2.0?).
Using a ruler to figure out distances between drillholes in the diagrams may be able to give you an idea of area.
Rockhole Bore they refer to 2 zones 600x800 (35metre depth) and 1000x800 (25metre depth). 600x800x35x2(sg value)=33.6MT 1000x800x25x2= 40.0MT
There's no guarantee that the mineralisation is consistent across the 2 zones but potentially Rockhole Bore is 73MT
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