Harder, M., T.E. Nowicki, C.M. Hetman, L. Freeman, and B. Abedu. 2012. “Geology and Evaluation of the K2 Kimberlite, Koidu Mine, Sierra Leone, West Africa”. International Kimberlite Conference: Extended Abstracts 10 (February). https://doi.org/10.29173/ikc3763.