Ann: Mbelele-2 Operations Update, page-192

"Justyn Wood, the CEO of Noble Helium commented: “It’s extremely pleasing to have completed the drilling stage at Mbelele-2 on time and safely, and with excellent borehole conditions so that we can now proceed to confidently collect the data we need to define the helium associated with the Mbelele structure. Early indications are excellent and consistent with the results at Mbelele-1.” The company explains that significant helium increases in the mud gas have confirmed multiple zones of interest in the Mbelele2 wellbore, including some pre-drill zones of interest and additionally,open-fractured basement, where the highest mud gas helium readings were encountered at multiples of background."

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Ok so "multiple zones of interest, which include pre drill zones of interest"

I'm reading this as we have Helium where we expected it to be, AND in more places.

The "15BCF" should also be in the "pre drill zone of interest", so the basement is another part of the multiple zone of interest that's not included in the pre drill zone of interest camp.