I am intrigued by slides 21 and 22 of this presentation. What...

I am intrigued by slides 21 and 22 of this presentation.

What exactly are they trying to tell us?

When you process COB ore (through gravity concentration) you can increase the grade of the resource? Who would have thought?!?

Does this imply that none of the ore of their competitors is capable of being processed in order to increase the grade/purity of their ore?

Would it not make more sense to talk about overall processing cost to achieve required purity of Co end-product? That would then allow a sensible comparison of COB resource to its competitors. Why highlight an intermediate processing step?

Happy to be educated, I am a relative novice to investing in mining companies.