RE: Inferred or indicated?16 Apr 2023 16:48
Looking back at Caravels copper projects pathway to pre-feasibility study for comparison to show how more favourable BR‘s pathway could be that should see far less drilling required for starters.
Back in June ‘20 Caravel had a resource with 212 million tons of indicated and 104 million tons of inferred resource.
Just prior to this, they had a $2.85m placement for drilling and early stage PFS work. From then over the next two years, they had two further share placements that had raised $16 million for diamond drilling to increase the resource and RC drilling for mostly infilling to upgrade.
Since 2019 to get to the ore reserve that their PFS is based on, 105mt measured (proven) and 485mt indicated (probable) with 1.42mt contained copper, comprised of 7740m of diamond drilling and 20,223m of RC drilling.
The main difference is that Caravel have had the necessity to upgrade, mostly all of their resource to create a positive NPV model due to the general absence of any shallow higher grade zone in their pit model that RC has. So it may only be necessary for Xtract to just create an early phase mine plan to show that the initial high grades will make the mine economically viable. This has generally been the direction that further work is pointing toward. It could well be that only the 191 million tonnes higher grade part of RC would need to be upgraded to convert to an ore reserve that the PFS will potentially be based on.
Another significant difference is that caravel are not going down the bulk ore sorting route, there has been no mention whatsoever from historical news so would surmise that the sortability of their ore type is not amenable to the new technology . Alternatively, they have optimised the delivery system and throughput reducing some CapEx. They have currently raised a further $15m to go to DFS and funding. They currently have a $142m MC without any incoming revenue stream.