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gold processing html

gold processing html

This is a free tutorial ongoldrecovery method using nitric acid to extract puregoldfrom oldgoldand scraps ofgoldbyprocessof dissolving unwanted metals. When I use this refining method, I regard the purity of thegoldas 22kt, and I alloy it accordingly down to 18kt or 14kt. This gives me a safety margin so thegoldis a slightly ...

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