"'establishment of the quality and quantity of a resource...

"'establishment of the quality and quantity of a resource offered by any new project, and then working out it's value should be pretty simple."

And that is from a mining journal? The journo must have had a degree in 17th century Albanian drama, to be writing that.

The classic unJORCable deposit is a silver or gold thin vein structure. You could drill the tenement like Wilgar and miss the seam every time. The company starts off with a maiden JORC, not very high, starts mining and can update the resource as they trace the vein. They can mine 20% of the JORC every year, and still end up with a bigger resource than they started with. Ten years down the track, still mining 20% of the resource ....

CDU's is relatively easy to establish a JORC. But there's none so blind as those that will not see.