9 September 2014. British-based mining firm Gem Diamonds has opened the Ghaghoo diamond mine in Botswana. Ghaghoo is the first underground diamond mine in the country and is estimated to hold 20.53 million carats worth $4.9bn.

MINING TECHNOLOGY

http://www.mining-technology.com/news/newsgem-diamonds-opens-ghaghoo-diamond-mine-in-botswana-4364741

 

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