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547 Posts.
184
01/02/20
21:47
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Are you sure it’s sub micron?
Doe you mean literally less that 1 micron?
How do they process to get that out of the rock?
Dont most gold grains come at least 5 microns and normally 20 and above at least?
Wouldn’t you have to grind it to as small as 10 microns to leach it at that size?
Can that even technically be done?
Or do they roast it?