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I then run everything from size 8 to 100 separately through the Blue Bowl, and hand pan everything that is size 2 or 4. I also make sure theCarefully prescreen concentrates to at least 30 mesh before adding them to the bowl. Add small amounts of con- centrates near the outer rim. Avoid excessive Fill the Bowl with treated water; shut off the water supply, then add one cup of concentrates along the outer edge the Bowl (inside). Always close the water clean up concentrator with keene miracle mat (2 sizes). Luckily, there are several flour gold recovery products specifically designed to help you get each fleck