The C14 age of the charcoal collected from the damped material of the silver mine in Kütahya-Gümüþköy which is operated by Eti-Silver Ltd. has been dated as 3534±24 y. This data points that the mining activities has been lasting since 1500 BC in Kütahya-Gümüþköy region. This finding also shows that the silver ore deposits of Gümüþköy had been known and operated by Hitites before Phyrigians who were in power by 12th centuries BC in this region of Anatolia.