Dominion Diamond Corporation Files Developer's Assessment Report for the Ekati Diamond Mine

7 November 2014

YELLOWKNIFE, NT (November 6, 2014) - Dominion Diamond Corporation (TSX:DDC, NYSE:DDC) (the "Company") is pleased to announce that it has filed the Developer's Assessment Report ("DAR")  with the Mackenzie Valley Environmental Impact Review Board ("Review Board") for the Jay kimberlite pipe ("Jay Project") at the Ekati Diamond Mine. The purpose of the DAR is to meet the requirements set out by the Review Board for the Environmental Assessment process.

The Jay Project is an extension of a large, stable, and successful mining operation with the potential to extend the Ekati Mine life out to approximately 2030: more than 10 years beyond the current closure date. The facilities required to support the development of the Jay Project and to process the kimberlite already exist at the Ekati Diamond Mine.

The submission of the DAR is the next step in the permitting process to develop the largest diamondiferous resource in North America. Following the submission of the DAR, the analytical and hearing phases of the Environmental Assessment process are anticipated to deliver a ministerial decision in late 2015. Once this decision is issued, the water license and land-use permitting process will take approximately a further 6 months.