De Beers Canada is defending its plan to close and reclaim its Snap Lake diamond mine following questions about the science behind its proposal.. Explore how Snap Lake diamond mine set new standards for sustainable underground mining, pioneering clean technologies and environmental stewardship in Canada.
Snap Lake Project The Snap Lake Diamond Mine is located 220 km northeast of Yellowknife, NT and is Canada's first completely underground diamond mine. Construction began in 2004 and the mine was in operation from 2008 to 2015.. De Beers says its shuttered Snap Lake diamond mine is "entering the final stages of active closure" ahead of a switch to long-term monitoring. Work to close down Snap Lake - the country's only fully underground diamond mine - has been under way since De Beers announced it would cease production at the end of 2015. At the time the company said the NWT mine, 220 km northeast of.