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<p>[QUOTE=&quot;LostDutchman, post: 2013436, member: 16994&quot;]The urea was used to neutralize the nitric acid before the precipitation process. The HCL was still acidic so when you add the storm agent the gold is the only thing that precipitates that isn&#039;t attacked by the remaining HCL. I filtered the gold and then neutralized the remaining HCL with lye.[/QUOTE]</p><p><br /></p>

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