The absence of strategy in orepass planning, design, and management prevalent geological structure, thus aggravating the situation. Another example that demonstrates the costs of lack of strategy is from a nickel mine, where the mine had no alternative but to rehabilitate a critical orepass using a liner. The actual costs of the rehabilitation orepass were close to C$7 million. life of ore-passes based on previous experience and case studies. Report to CAMIRO Mining Division. BUTCHER, R., STACEY, T.R., and JOUGHIN, W.C. 2005. Mud rushes and methods of combating them. Journal of the South African Institute of Mining and Metallurgy, vol. 105, vol. 11. pp. 817–824. FERGUSSON, G. 1991. Ore pass design guidelines. Report for the Mining Research Directorate. Acknowledgements GOULET, C. 2000. Fonçage, Réhabilitation et Monitoring des Cheminées au Projet Bell-Allard, 14e Colloque en Contrôle de Terrain. Association Minière du Québec : Val d'Or. The contribution of several colleagues at minesites in North America and South Africa is greatly acknowledged. The opinions expressed in this paper are of the authors and do not necessarily reflect the opinion of various companies or institutions we have worked with in the past nor of our sponsors, such as the Deepmine Research Programme, Institut de Recherche Robert Sauvé en Santé et en Sécurité du Travail (IRSST), and the Natural Science and Engineering Research Council of Canada. The second author is supported in part by the National Research Foundation of South Africa (Grant specific unique reference number (UID) 85971). The Grantholder acknowledges that opinions, findings and conclusions or recommendations expressed in any publication generated by the NRF supported research are that of the author(s), and that the NRF accepts no liability whatsoever in this regard. HADJIGEORGIOU, J. and LESSARD, J.F. 2010. Strategies for restoring material flow in ore and waste pass systems. International Journal of Mining, Reclamation and Environment, vol. 24, no. 3. pp. 267–282. HADJIGEORGIOU, J., LESSARD, J.F., and MERCIER-LANGEVIN, F. 2005. Ore pass practice in Canadian mines. Journal of the South African Institute of Mining and Metallurgy, vol. 105, no. 11. pp. 809–816. HADJIGEORGIOU, J. and MERCIER LANGEVIN, F. 2008. Estimating ore pass longevity in hard rock mines. 42nd US Rock Mechanics Symposium, San Francisco. HADJIGEORGIOU, J., ESMAIELI, K., and HARRISSON, R. 2008. Observation of ore pass system performance at Brunswick mine. CIM Bulletin, vol. 101, no. 1110. Paper 13. JOUGHIN, W.C. and STACEY, T.R. 2005a. Risks associated with rockpasses in deep level tabular mines based on historical pass performance. Journal of the South African Institute of Mining and Metallurgy, vol. 105, no. 11. pp. 795–802. JOUGHIN, W.C. and STACEY, T.R. 2005b. The behaviour of ore passes in deep tabular mines. Second International Seminar on Deep and High Stress Mining, Sandton, South Africa. Symposium Series S37. South African Institute of Mining and Metallurgy, Johannesburg. LESSARD, J.F. and HADJIGEORGIOU, J. 2006. Ore pass database: Quebec underground metal mines. CIM Bulletin, March/April 2006. References BARTON, N., LIEN, R., and LUNDE, J. 1974. Engineering classification of rock masses for the design of tunnel support. Rock Mechanics, vol. 6. pp. 189–236. BEUS, M.J., PARISEAU, W.G., STEWARD, B.M., and IVERSON, S.R. 2001. Design of ore passes. Underground Mining Methods. Hustrulid, W.A. and Bullock, R.L. Society of Mining Engineers, New York. pp. 627–634. BIENIAWSKI, Z.T. 1989. Engineering Rock Mass Classification. Wiley, New York. BIENIAWSKI, Z.T. 1992. Design Methodology in Rock Engineering: Theory, Education & Practice. A.A. Balkema, Rotterdam. BRUMMER, R.K. 1998. Design of orepasses: methods for determining the useful MERCIER LANGEVIN, F. and HADJIGEORGIOU, J. 2004. Design considerations for ore pass systems in massive sulphide nickel operations. Report submitted to Mines Technology Department, INCO Limited. p.63. STACEY, T.R. 2004. General guidelines for the design of rock passes. Colloquium: Design, Development and Operation of Rockpasses, Saxonwold, South Africa. South African Institute of Mining and Metallurgy, Johannesburg. STACEY, T.R. and SWART, A.H. 1997. Investigation into drawpoints, tips orepasses and chutes. Vol. 1. Report to the Safety in Mines Research Advisory Committee, Johannesburg. Project OTH 303. ◆ 25 Erratum Gph 35 Correct Figure 12 P (kbar) Figure 12 which was printed in the Rogers paper in the SAIMM Journal in July 2013 entitled, ʻKX36—rediscovering the diamond exploration potential of the central Kalahari in Botswanaʼ, by A.J. Rogers, T.G. Hough, and J.M. Davidson, vol, 113, no 7, pp. 539–545 was incorrectly printed. Dia 45 55 36 38 40 42 44 65 600 700 800 900 1000 1100 Temp (°C) 1200 1300 1400 The Journal of The Southern African Institute of Mining and Metallurgy VOLUME 113 OCTOBER 2013 801 ▲ Figure 12—Nimis and Taylor thermobarometry results for peridotitic CPX from KX36. Model geotherms are from Pollack and Chapman (1977). Graphite/diamond stability curve is from Kennedy and Kennedy (1976)