I'm pleased to see the very clear and frank description of the...

I'm pleased to see the very clear and frank description of the pilot plant progress and quite plausible problems encountered.
I'm a little puzzled about output percentage purity. From the report:
"IHP entails:
? Mining
? Simple beneficiation to 15-20% P2O5
.......
Superphosphoric acid production at a contained ±70% P2O5 (a high strength product with thermal acid properties with both agricultural and industrial applications)"

But the only P2O5 output mentioned from the pilot plant is 5%. Can anyone enlighten me as to the required P2O5 output from the plant, and the eventual full scale plant in NT using this process? I assume further refinement will be needed beyond the current process, assuming it proves feasible?