16th International Multidisciplinary Scientific Geoconference (SGEM 2016), Albena, Bulgaristan, 30 Haziran - 06 Temmuz 2016, ss.365-371
Anatolia and in particular Nigde, has an important place in terms of mining history. The inscription belonging to the late Hittite period is the world's first written mining license, and it is written on the rocks located in the Ulukisla area.