Dominion Diamond Mines Dominion Diamond Mines Dominion Diamond Mines (formerly known as Dominion Diamond Corporation, Harry Winston, and Aber) is a Canadian specialist diamond mining company. The company holds a 40% stake in the Diavik Diamond Mine Project. Production at the Diavik Diamond Mine, Canada's second diamond mine, is operated by Dominion Diamond Mines' joint venture partner, Diavik Diamond Mines Inc., a subsidiary of Rio Tinto Group. The mine began producing diamonds in November 2002. In 2012 the company purchased all of BHP Billiton's diamond assets; the primary asset is the Ekati Diamond Mine, which is adjacent to the Diavik Mine. Diavik and
Letlhakane diamond mine at a processing plant at its sister mine, Orapa diamond mine, about distant. The Letlhakane mine is also managed from the Orapa mine. In 2015, over 2.1 million tons per year of ore was mined, and over 2.3 million tons was treated, resulting in 583,000 carats of diamond. As of 2017, the Letlhakane Mine ceased open pit operations and completed a plant for the processing of tailings. This is expected to extend the life of the operations at this facility until 2043. Letlhakane diamond mine The Letlhakane diamond mine is a diamond mine located in Botswana about west of the