Ann: Goulamina Metallurgy Testwork Surpasses Expectations, page-94

If these grind sizes are "un-heard of" and "far from what greenbushes are doing", why does Albemarle guarantee that at least 80% of their SC6.8 product (which is a more premium product than SC6.0) is delivered at a grind size of less than 75 microns?

For Albemarles SC7.2 (their most premium spodumene concentrate) they also state typically 89% is less than 212 microns in size and 75% is less than 75 microns in size.

It seems the grind sizes of 150 and 212 microns used in this test work are very similar to what the best in the world are using for their premium products. I am far from any sort of expert but it only took a 5 minute google search to figure out you have no idea what you are talking about.