Re JORC ASSUMPTIONS...which imo have been massively understated by everyone. Let me explain...and if wrong then please correct me.
All jorc calcs have gone roughly...
6500(strike length)×5(DOF width)×200(DOF depth)×2.8(specific gravity).
There is one glaring error in the above which I've been trying to identify for some time...but dawned on me last night..i.e. the DOF depth.
For the DOF to be only 200m for a vertical depth of 200m implies that the DOF is vertical....which from cross sections we know its definitely not.
I used 50deg when calculating the open cut quantities, but as other posters have suggested it might be closer to 35 to 40 deg....as the majority of drilling was conducted at 55deg...thereby intersecting most of the DOF's at near right angles...hence getting close to true widths.
NOW...if we assume an average DOF dip of 40 deg...THEN to get to a vertical depth of 200m, the ACTUAL length/depth of the DOF has to be 311m which obviously makes a huge difference to the calc volumes.
Hence the above JORC calc should be...
6500×5×311×2.8 =28.3 mt
Added to that, if we could account for the extra DOF's which we know of...then the width in above calc could be more like 6m or so....which adds another 20% to the volume.
If we then add the latest 600m extended drilling, plus the infill drilling between the 2 major drilling areas....then JORC most.likely over 7500m .i.e. if the extra areas make it into the current JORC.
Which then gives....
7500×6×311×2.8 =39.2 mt or 55000t Co
which was also the amount of Co shown in CLA peer comparison charts????
IMO....taking into account the above, I'd be expecting the JORC to be well in excess of 30 mt.
Re JORC ASSUMPTIONS...which imo have been massively understated...
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