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By Hugo Melo

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Africa: Letšeng, Lesotho

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Hugo Melo

August, 2018

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The Letšeng Diamond Mine is the lowest grade primary diamond deposit presently being mined globally and it contains some of the world’s largest and highest value diamonds. Due to the very low grade of the various rock types being mined, resource development is challenging. Traditional evaluation methods are often not feasible. Resource development and extrapolation of grade and value requires an understanding of the volcanic history which is developed through petrography and geological mapping. SRK has been involved in geology development and training at Letšeng for the last 5 years and is presently involved in updating the current 3D geology models and mineral resource in support of mine planning activities.