1. Department of Mining and Mineral Engineering, National Higher Polytechnic Institute (NAHPI), The University of Bamenda, P.O. Box 39 Bambili, North West Region, Cameroon
2. Department of Geology, Mining and Environmental Science, The University of Bamenda, P.O. Box 39 Bambili, North West Region, Cameroon
3. Economic Geology Unit, Department of Geology, University of Buea, P.O. Box 63, Buea, South West Region, Cameroon
4. Department of Civil Engineering, The University Institute of Technology (IUT), University of Douala, P.O. Box 8698 Douala, Littoral Region, Cameroon
5. Department of Earth and Environmental Sciences, Botswana International University of Science and Technology, Private Bag 16, Palapaye, Botswana