10,000 mesh does exist. I verified it on the interweb. I also did more research on this hydro-pressure ore pulverizing. The gist of the matter is, they take very high water pressures and subject the concentrated ore to what amounts to water shock waves much like exploding/collapsing bubbles that wears down the edges of your metal propellor on your outboard boat motor. Ever see that? It is called cavitation. Look it up! Tremendous pressures. It pulverizes ore into tiny tiny tiny granules - almost like powder. That's how they get the gold out.
It took a lot of research to find this out. I hope some of you find it helpful.
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