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This is the Riffle only as shown in the photos so you can build your own sluice box or repair and old one
This is to allow all the microscopic gold & other Precious metals to collect together
Determination of Small Amounts of Platinum in Cupellation Beads by Microfiltration
Please look at all the photos
Chris Ralph Teaches "How to Read a River for Placer Gold Deposits"DVD Mining SETS This is the Riffle onlyJoin ICMJ's Prospecting and Mining Journal Writer, Chris Ralph, as he explains where gold is most likely to concentrate along a river. See dredge operations that have used these rules of thumb to get in some rich pockets. Plus, you will see some spectacular underwater video of trout benefiting from these operations.
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