I agree (and BKT would as well) that this is a preliminary...

I agree (and BKT would as well) that this is a preliminary report. From the report:

Summary
Managing Director Steven Tambanis commented: “Meeting and then exceeding stringent spherical graphite specifications is a significant milestone for the Company; confirmation that Mahenge graphite is a quality material with the characteristics to enter the fast growing battery graphite market. We have comprehensive spherical test programmes underway to determine detailed material properties and optimise a processing flowsheet. This validation process is a critical step to obtaining end user acceptance of Black Rock Mining’s Mahenge graphite.”
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The Company is expecting to receive the results from the higher purity spherical test programmes in late October.

One box ticked, more to come. The importance of this test is that spherical graphite can be made from BKT graphite, ensuring an 'end product', as well as a timeline towards further progress.