Greetings - Overtheedge - Thanks for the info, the reason I need the screening is that I want to get a screen fine enoegh to separate the flake gold from that real fine black sand. When trying to pan out the gold, the flakes like to skate around the pan and won't stay put so I can use the snuffer bottle to pick them up. The fine flour gold I don't seem to have a problem with. The concentrates come from the North Saskatchewan river.
I do have a 20 mesh screen, so I thought that I would need something a lot finer.