Koza Altin Isletmeleri A.S. explores for and operates gold mines in Turkey. It owns and operates seven mines in OvacikBergama-Izmir, Çukuralan-Izmir, Kaymaz-Eskisehir, Mastra- Gümüshane, and Himmetdede-Kayseri regions. The company was incorporated in 1989 and is headquartered in Ankara, Turkey.