Ann: Castile Receives Significant Copper Results from Rover 1, page-29

Yes - drilled near to older holes on that cross-section - clipping of plane of that cross section is +20m to -20m so the interesting thing about the recent hole is that the gold grades and width in that area surrounded by the Jupiter Ironstone are much much higher grade and much thicker than some of the historic drilling intercepts. Without a 3D view we can't see the exact physical/geometric relationship between the recent CST hole and the older drill holes, the cross section view just makes it "look" like they are all on the same section plane but they are just somewhere in that + or - 20m clipping plane.

And then consider that some of the older drilling is multiple wedges off deep surface holes (or maybe even some deep underground holes?) that may have been drilled a fair while ago. With ironstone and magnetic interference all over the place, plus some of the older less accurate down hole survey equipment in use in the past, there is often some considerable doubt as to the exact trajectory of those old drill holes - they only needed to have one undocumented weird navicut bend or an erroneous downhole survey reading further up the hole or no gyro survey instrument run in a hole to make the exact location of the old drill hole change a bit further down hole, and this is attenuated with very long drill holes.

Looking at that cross section CST have got the new hole of 20CRD001 with 30.4m of 35.6g/T Au located right in-between older historic holes of only:

9m @ 1.1g/T Au approx 60 up dip (hole WGR1D24-1)
and
13m @ 24g/T Au only 25m down dip (hole WGR1D002-5)

* all reported apparent downhole lengths not true width

So it would seem that there is quite a bit of variability within that one drill section which isn't totally unusual for those Tennant Creek style IOCG deposits anyway, throw in some doubt as to actual hole trajectories and locations, complex structurally controlled ore zones plus the fairly wide spaced drilling and you have lots of gaps in the drill coverage which can sometimes hide bonanza style localized gold and copper zones within the orebodies and the ironstones (and even adjacent to the ironstones).

Also remember the level of knowledge and the focus of the drilling is different now to in the past when these deposits were being mined in the '50s '60s and '70s, these were considered copper mines and sometimes areas that were not obviously ironstone and with no obvious high grade chalcopyrite were often not sampled, and its possible that many non-ironstone gold zones were not sampled and therefore not recognized. I would be willing to bet that if the drill core for some of those older holes on that section could be found in the core yard that the CST geologists would be checking if the sampling intervals in those drill cores might be expanded? They might be there on a pallet buried under spinifex somewhere...