https://www.mining-technology.com/news/botswana-diamonds-kimberlite-pipes/
Botswana Diamonds identifies kimberlite pipes at Thorny River project
Sep 3, 2019 - Botswana Diamonds has identified kimberlite pipes at its Thorny River project in South Africa, following geophysical work.
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https://www.usgs.gov/publications/grade-tonnage-and-other-models-diamond-kimberlite-pipes
Grade-tonnage and other models for diamond kimberlite pipes | U.S. Geological Survey
Grade-tonnage and other quantitative models help give reasonable answers to questions about diamond kimberlite pipes. Diamond kimberlite pipes are those...