TO GO WITH AFP STORY IN FRENCH BY Reinnier Kaze - A sign indicating to passer byers that they are entering a minning concession is pictured on March 25, 2010 in Nkamouna forest some 400km south east of the capital Yaounde. American-Canadian minning outfit Geovic mining coorporation's (Geovic) Cameroonian subsidiary Geovic Cameroon (GeoCam) estimates that mineral reserves of cobalt, nickel and magnesium reach some 54.7 million tonnes and say that 37 million euros (US50 million) are needed to lauch the minning operation that would enable the company to become the world's number one cobalt producer. AFP PHOTO / STR (Photo credit should read STR/AFP/Getty Images)