Very limited geological investigations, intended for different purposes have been conducted by different institutions and researchers in the south western region of Ethiopia, particularly different mineral exploration works for gold studies were carried out in the area: An Italian Gold Mining Company, Kommina 1934-1940, the company has done Placer Gold and Copper Exploration on kolu valleys, approves 400,000 metric tons copper originated Kolu Rift valley creek and Adikas Village Kalum sight Kibish River creek. Akobo River and its tributaries approve 243698kg Gold gravelly in 1934-1940. The Eastern Bank of Akobo River these includes Adikas village and Kari River at Tirima Tid Wereda Zilimamo sub werda 1939 and Maji Awuraja Mehal Maji Werda Adikas Kebele Kalum Seiru mountain around Kibish River and Kendibabe and Gassana creeks.
