Diavik Diamond Mine, Yellowknife, Canada
The Diavik Diamond Mine, winner of four John T. Ryan safety trophies (one national and three regional) is located 300 km. northeast of Yellowknife, Northwest Territories and is an unincorporated joint venture between Diavik Diamond Mines Inc. (60%) and Harry Winston Diamond Limited Partnership (40%). Both companies are headquartered in Yellowknife, Canada. DDMI is a wholly owned subsidiary of Rio Tinto plc of London, England, and Harry Winston Diamond Limited Partnership is controlled by Harry Winston Diamond Corporation of Toronto, Canada. DDMI is the operator of the mine.