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Geo is right, all that copper green on the CPU:s tells me that there are a lot of base metals left.


Aqua regia on fiber processors are nothing I would recommend, there are too much buried copper that the gold can cement back onto... been there, done that

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=60&t=17697


Your gold is most probably with the solids.


Göran


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