Latest Resource Statement from Dominion Adds 13M Carats to Diavik

Dominion Diamond Corporation has updated its reserves and resources statement and an updated “reserves-only” life of mine plan for the Diavik diamond mine. The new statement adds 3.9 million tons containing approximately 13 million carats to the mineral reserves.

As of December 31, 2014, the mine had 18.1 million tons of proven and probable mineral reserves containing 53.3 million carats of diamonds.

At the A-21 pipe, 3.7 million tons containing 10 million carats has been promoted to proven reserve material. In addition, at the A-154 North pipe, 0.24 million tons of inferred resources at depth were promoted to probable mineral reserve status. Within the remaining reserve at the A-154 North pipe, 0.5 million tons were promoted from probable reserve to proven reserve, supported by sampling in the active mine which improved confidence for production forecasting.

Routine mine sampling, delineation drilling and mine surveying have increased forecast grade to the existing mineral reserves at the A-154 South, A-154 North and A-418 pipes.

The Diavik processing plant can process over 2 million tons a year. To supplement mined ore in calendar 2015, the company said it plans to continue processing old coarse ore rejects material (COR). Based on these historical recovery rates, the tonnage of this material which is planned to be processed during calendar 2015 will produce 0.29 million carats from COR. There is no plan to process COR after calendar 2015.