Dominion Diamond Corporation Issues Updated Mine Plans for the Ekati and Diavik Diamond Mines

3 February 2014

TORONTO, Feb. 3, 2014 /PRNewswire/ - Dominion Diamond Corporation (TSX:DDC, NYSE:DDC) (the "Company") is pleased to release an updated life-of-mine plan for each of the Ekati and Diavik Diamond Mines, including current estimates for anticipated annual production by pipe, with associated operating costs and capital costs.

Highlights:
Both mines are performing well; Diavik as an all underground mine and Ekati as a combination open pit-underground mine.
The operating cost forecasts in the updated Diavik mine plan demonstrate substantial savings compared with the previously published mine plan (2012), whilst mining and processing an increased amount of ore.
The new Ekati Mine Plan includes the first detailed production forecast based on reserves only to the Dominion Diamond fiscal year end (January 31st) with production currently forecast to run through to fiscal 2020.
The synergies, cost savings and efficiencies brought about by the integration of the Ekati and Diavik sales and sorting processes and resources are already demonstrating benefits.