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Dominion Diamond reports updated reserve and resource statement for Diavik Diamond Mine

EBR Staff Writer Published 09 March 2016

Dominion Diamond is pleased to release an updated reserve and resource statement for the Diavik Diamond Mine.

The tables below summarize the mineral reserves and mineral resources at the Diavik Diamond Mine as at December 31, 2015, expressed in millions of tonnes, carats per tonne, and millions of carats.

The mineral reserves shown here account for all depletions due to production and sampling to December 31, 2015. The mineral reserves also include forecasted mining losses and dilution. Underground mining dilution and losses have been assessed regularly since the production ramp-up began in 2010.

Because more than one mining method is underway in the underground mine, dilution and losses are a function of the method used, experience and observation. The future A-21 open pit is expected to have dilution and losses similar to those achieved during Diavik's first decade as an open pit operation.

New data from surveying along with the results of new samples taken in active mining areas were incorporated into the latest reserve and resource models in calendar 2015. There were 3 new samples taken in A-154 South, 16 new samples taken in A-418 and 4 new samples taken in A-154 North.

Beyond the active mining areas of A-154 North, a further 53 samples were collected from a drilling campaign to access deeper regions. This resulted in the amount of A-154 North probable reserves more than doubling to approximately 4.7 million tonnes (11.1 million carats) through the promotion of inferred resources and the addition of new kimberlite at depth.

Dominion Diamond Corporation is the world's third largest producer of rough diamonds by value. Both of its production assets are located in the low political risk environment of the Northwest Territories in Canada where the Company also has its head office.

The Company operates the Ekati Diamond Mine through its 88.9% ownership as well as a 65.3% ownership in the surrounding areas containing additional reserves and resources, and also owns 40% of the Diavik Diamond Mine.

Between the two mining operations, diamonds are currently produced from a number of separate kimberlite pipes providing a diversity of diamond supply as well as reduced operational risk. It supplies premium rough diamond assortments to the global market through its sorting and selling operations in Canada, Belgium and India.


Source: Company Press Release