Ann: Major Developments at Dalgaranga Critical Metals Project, WA, page-15

Hi @RobThomas

I've been reading back over the old announcements on Dalgaranga thinking about this question of depth.

The announcement of 31/10/2017 reports the results of 11 vertical holes of about 100m each, snips below showing map of location and rubidium grades of intercepts. The deepest intercepts on these vertical holes range from 34m to 137m depth - the latter at the end of total 71 m intercept zone. The average lowest depth of intercept is 79.5 m and the shallowest intercept is 22m. All of the holes are outside of the pit except for 001 which appears to be at the entrance to the pit. I've circled them as 2 groups - group 1 is clearly the better, perhaps the pegmatite trends under there?

The critical thing to me here is the the pit is no more than 15m deep at it's deepest point. If the pit was the exposed part of the pegmatite, and they just skimmed the surface at 15m it appears that there could be clearly area of interest still under the pit itself, maybe 10s of metres thick before we even look at the extension outside it. It certainly seems worth punching some holes down 80-100 m from the floor.

The other thing that caught my attention is that more than half of chips from the waste piles graded high for rubidium. ARN have stated that they believe that the rubidium mineralisation on their site is not associated with the tantalum that was mined and thus not removed with the tantalum. They think pretty much 100% of their conceptual exploration target remains on site. If true, I don't see why this wouldn't also be the case for KTA since it was also a tantalum project. A good hit rate on the waste samples providing support and potentially early quick wins after gaining an ML.

Do these conclusions seem reasonable to you as a professional in the field?