KRR Chart, page-450

Looking at the report (see below) I would make the following comments:

1.  Testing a larger sample to prove they can repeat the results makes sense and is something an off-take customer/partner would want to see.
2.  Same with independent umpire assay.
3.  Proving that the HPA is 100% alpha-lumina is interesting and very specific. Someone is drilling down into detailed specification. I've rtead PFS and DFS from other HPA producers and not seen this before. Again, can't be bad to prove what you have is the genuine article.
4.  As for 3.
5.  Increasing efficiency if possible just makes the numbers in the PFS better.

In summary, I cannot see anything wrong here or even remotely negative.

The hydrometallurgical work would be finalised post the completion of following tests:

• Repetition of the previous 4N HPA product test on a larger sample for repeating the >99.99% result and providing an additional product for verification analyses
• Independent umpire assay of >99.99% Al₂O₃ result at the SSM project
• New equipment trials for increasing the calcination temperature for ensuring the HPA phase is all alpha-alumina
• X-Ray Diffraction (XRD) analysis for confirming that HPA produced is 100% alpha-alumina
• Increasing efficiency of the Stage 2 purification