Construction of the expansion of the mine to an annualised rate of over 300,000 ounces per year was successfully completed. A second gold mine, the Lero - Karta mine has been developed by Kenor of Norway. Kenor has exploration programs in the area seeking extensions east of the Karta River. SMD have recently outline additional gold deposits at Fayalala, 10km away from Lero, which has outlined a resource of 1.3 Moz gold. Canadian gold miner Semafo have completed feasability studies at its Jean Gobele gold prospect located in 500km northeast of Conakry in central Guinea.
Alluvial deposits occur throughout the Niger River basin.