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Debswana Diamond Mines Mining Technology
Rocks from all three facies (crater, diatreme and hypabyssal) have been identified. Current mining levels are contained within the crater-facies units. At Letlhakane, three different distinct episodes ... of just over 200m with sedimentary crater facies infill to at least 90m depth. The B/K15 kimberlite can generally be described as a diatreme-facies TKB. "In 2005, Debswana ...
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