South Western Desert BIF laboratory studies and gold extraction tests - Khalid, A. M.; Greiling, Reinhard O.; Said, M.M.; Megahed, A.; Shaaban, G.; Micheal, W.; Hussein, A.M.; Tawfik, I.; El Hofy, S.I.; Khattab, M.M. (Annals of the Geological Survey of Egypt, 2003)