esm23 19 - Reading - Diavik Field Guide

esm23 19 - Reading - Diavik Field Guide - THE DIAVIK...

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Bryan, D. and Bonner, R. 2003: The Diavik Diamond Mine, Lac de Gras, Northwest Territories, Canada; in VIIIth International Kimberlite Conference, Slave Province and Northern Alberta Field Trip Guidebook, B. A. Kjarsgaard (ed.); p. 61-65. THE DIAVIK DIAMOND MINE, LAC DE GRAS, NORTHWEST TERRITORIES, CANADA D. Bryan and R. Bonner Diavik Diamond Mines, 5007 50 th Avenue, Yellowknife, NWT, Canada X1A 2P8 INTRODUCTION The Diavik Diamond Mine is an unincorporated joint ven- ture between Diavik Diamond Mines Inc. and Aber Diamond Mines Ltd., both headquartered in Yellowknife, Northwest Territories. Diavik Diamond Mines Inc., a wholly owned subsidiary of Rio Tinto plc of London, England, is the project operator and retains a 60 % interest in the project. Aber Diamond Mines Ltd., a wholly owned subsidiary of Aber Diamond Corporation of Toronto, holds the remaining 40 % interest in the project. The partners retain the right to receive and market their share of all diamonds produced at the mine. The Diavik Mine is located 300 km northeast of Yellowknife, NWT. This remote site, located within the sub- Arctic “barren lands”, is most easily accessed by aircraft, and is linked in winter months by a temporary “ice road” to Yellowknife. The mine infrastructure is contained on the 20 sq. km. East Island, which is located in the eastern end of Lac de Gras (Fig. 1). The four project kimberlites, located beneath shallow waters immediately east of the island, will be mined over a twenty-year period. Access to the A154 South and A154 North kimberlites was enabled through the construction of a temporary dike (Fig. 2). Similar dikes are planned for the A418 and A21 kimberlites. The Diavik proj- ect includes 263,000 ha under mineral claims and mining leases. Sixty-three kimberlite occurrences, approximately 50% of them diamond bearing, have been located on the property. Staged exploration programs are on-going through- out the property. The current Diavik resource includes the A154 South, A154 North, A418, and A21 kimberlites. Both the A154 South and A154 North kimberlites will initially be mined by open pit methods from the A154 open pit. Open pits, begin- ning in 2009 and 2013 respectively, will develop the A418 and A21 kimberlites. Underground mining is also planned for the A154 South and A418 kimberlites. Infrastructure development and mine construction began in 2000 following regulatory approvals. Initial recovery of the A154 South kimberlite began in November 2002, and by January 2003 had reached sufficient production level to allow the first dia- monds to be delivered to the project partners, several months ahead of schedule. Ramp up to full production is continuing. The project is within the C$1.3 billion capital budget.
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This note was uploaded on 08/06/2008 for the course ESM 235 taught by Professor Dunne during the Winter '08 term at UCSB.

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esm23 19 - Reading - Diavik Field Guide - THE DIAVIK...

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