@sevo really interesting comment about bore hole data and the...

 @sevo really interesting comment about bore hole data and the 6m (trench depth?) that most of the local players are using. under the jorc code a resource can only be calculated for that part of an orebody that has the potential to be extracted by known mining methods. as an example of where this has been flaunted in the sop hopefuls is generating a resource to 30 - 90 - 120m, then proposing to use trenches for extraction. under jorc the resource must be recalculated to just the zone of extraction i.e. 6m from surface.

the only companies in my research that can stand by their resources is apc with its deep basal aquifer, and rwd with their surface aquifer (though i must look closer at this).