A little over a year ago, Lucas Ntsipe promised his chief executive William Lamb that he would produce something special out of the Karowe mine in a remote part of Botswana.
On Monday morning, the 52-year-old assistant general manager of Canadian diamond miner Lucara delivered. “I got a call from one of my engineers, who said: ‘We have discovered something’,” said Ntsipe.
“I said: ‘You are crazy and you are not telling me the truth. Maybe it’s a broken bottle.’”
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