Overview

Mine Type	Underground
Status	Closing / Closed
Commodities	Diamond
Mining Method	Room-and-pillar
Production Start	...
Snapshot	The Snap Lake Mine (the Mine) is a former underground diamond mine operated from 2008 to 2015, when De Beers put the Mine into a temporary closure phase called Care and Maintenance. With regulatory approvals in place, at the beginning of 2017 the Mine was allowed to flood with water. The company has since announced its plan to put the Snap Lake Mine into final Closure. Closure of the Snap Lake Mine will happen in two phases. Firstly, during the Closure phase, water management systems will be adapted for Closure, followed by decommissioning and demolishing of mine facilities, and finally the land will be reshaped and revegetated. During the Post-Closure phase monitoring programs will be put in place to check that the Snap Lake Mine is meeting closure goals and ensuring the successful long-term closure of the site.

Deposit type

• Kimberlite

Summary:

The Snap Lake kimberlite is found on the northwest shore of Snap Lake and extends to the southeast under the lake. It is hosted within sediments and volcanics of the Yellowknife Supergroup. This kimberlite body is relatively flat-lying (dipping at approx. 15°NE) and is known as the NW dyke. The dyke has an average thickness of 2.7 metres, however, its total extent has not yet been defined. Two kimberlite pipes have been found close to the eastern boundary of the Camsell Lake property 34 kilometres east of Snap Lake; these are known as the CL 25 and CL 174 pipes.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Production