Pre-sinking complete at Karowe mine
Shaft pre-sinking at Canadian-headquartered diamond mining company Lucara’s Karowe mine, in Botswana, was completed at the end of February. “Each shaft is approximately -52 m below collar. The final depth for the ventilation shaft is -730 m below surface, and -767 m below surface for the production shaft,” says Lucara VP technical services Dr John Armstrong.