1. Kulima Integrated Development Solutions (Pty) Ltd, Postnet Suite H79, Private Bag x9118, Pietermaritzburg, 3200, South Africa
2. School of Architecture and Planning, University of the Witwatersrand, Johannesburg, Private Bag 3, WITS 2050, South Africa
3. School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK