The new shaft is the deepest shaft of any gold mine in Zimbabwe,
Central shaft key to Caledonia's expansion plans.
Miner wants to significantly reduce the risk to the mine of any further deterioration in the grid.
Company plans to reduce dependence on the domestic utility due to recurring supply disruptions.
Gold mine is currently drawing power from the Zimbabwean grid.
Caledonia has implemented changes at various stages of the production process.