RE: Reminder - April 2nd8 Apr 2026 13:16
@robsaunders strange that you posted a very similar post yesterday hmmm. . IF you have any shares can always sell them is so worried.
Perhaps you would like to tell us that as it seems on all evidence new and past, and Sproule, the Helium is there. Why won't we be able to recover it? Just the same as HEX, BlueStar (HE1's partner) and many more. Struggling to think of one that has failed when volumes are such as ours. They have already had historical gas to surface remember...............
Sproule are notoriously conservative in their reports, and I have seen many of them! You have to accept it although it doesn't mean the company's experts necessarily agree with them. In fact more often than not they don't and are proved right. That is certainly the case here as you can see blow Re Porosity.
The company have already stated they will use acid stimulation which is pretty standard procedure nowadays in these types of Wells and usually greatly enhances the flow. So I for one am looking forward to better figures than in the report. Plus we are not a one trick pony with lots to go for.
Porosity
In May 2025, Mosman released its internal estimate of contingent resources for Sagebrush, which indicated a higher best estimate of helium volumes (C2 of 305 MMscf gross, 205 MMscf net to Mosman). The subsequent Sproule ERCE audit has applied more conservative technical parameters, resulting in lower prospective figures.
The main difference is porosity. Mosman's internal analysis utilised an 8% porosity value, supported by in-house petrophysics and core data from analogue Leadville wells. Sproule ERCE applied a more conservative 4.6% "most likely" porosity, which has the effect of reducing calculated volumes. The Company believes this approach understates the contribution from dolomite intervals, vugs and fractures observed in other producing Leadville reservoirs.
While Sproule's conservative stance is in line with their reputation as a leading independent auditor, Mosman remains confident that real reservoir performance will prove stronger. The Company therefore regards the Sproule 2U case of 134 MMscf helium as a baseline from which to build and sees material potential to achieve or exceed these figures as production testing and 3D seismic data are integrated.
"Extended flow testing of Sagebrush-1, with acid stimulation to enhance productivity"