Naidoo, P., J. Stiefenhofer, M. Field, and R. Dobbe. “Recent Advances in the Geology of Koffiefontein Mine, Free State Province, South Africa”. International Kimberlite Conference: Extended Abstracts 8 (June 22, 2003). Accessed March 28, 2024. https://ikcabstracts.com/index.php/ikc/article/view/3207.