Slag heaps in close proximity to ancient mine workings in Turkey and Greece establish that silver mining started out about 3000 BC. The metal was refined by cupellation, a system invented with the Chaldeans, who lived in what's now southern Iraq. In substantial doses, silver and compounds that contains it https://konzeptualisierer.de/machen-sie-aus-ihrem-silber-bargeld-expertenratschlage-zum-verkauf-von-edelmetallen/