Ideas, tips, techniques

Technology for extracting gold and silver from electrical and radio components. Free method of extraction of precious metals at home Once in my youth I had to live near a radio factory, in the landfill of which radio components could be collected with a scoop, which we did. Many dragged them to the flea market and sold them to radio amateurs, and I, under the influence of my neighbor, who was chemical everything, got carried away with the extraction of precious metals from some parts... read more>>>

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