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Diavik Produced 6.7 Mln Cts in 2011

January 17, 12 by IDEX Online Staff Reporter

(IDEX Online News) – The Diavik diamond mine in Canada produced 1.6 million carats in the fourth quarter of 2011 and 6.7 million carats of diamonds in the full year. The mine’s total proven reserve is 16.1 million carats.

 

Production at Diavik suffered from of lower than expected amounts of reprocessed ore, and therefore the mine did not reach the target 6.9 million target its operators were aiming for.

 

Harry Winston Diamond Corporation holds a 40 percent stake in the mine and Rio Tinto, which also operates it, owns the 60 of the mine.

 

According to a report published on Tuesday by Harry Winston Diamond, mineral reserves at Diavik are as of December 31, 2011 are:

 

 

PROVEN RESERVES

PROBABLE RESERVES

PROVEN and PROBABLE

    Mt      ct/t      Mct

      Mt      ct/t      Mct

      Mt        ct/t        Mct

A-154 South
       Open Pit
      
 Underground
       Total A154S


-       -         -
   
 1.6     4.0     6.3
    1.6     4.0     6.3


-        -         -
1.4     
 3.4      4.7
       1.4      3.4      4.7


-            -          -
    
 2.9        3.7     10.9
      2.9        3.7     10.9

A-154 North
       Open Pit
      
 Underground
       Total A154N


-        -         -
   
 3.1      2.3      7.1
    3.1      2.3      7.1


-         -         -
   4.9     
 2.2     10.7
      4.9      2.2     10.7


-          -          -
   
 8.0       2.2      17.8
      8.0       2.2      17.8

A-418
       Open Pit
      
 Underground
       Total A418

   
0.7      4.0      2.8
    -        -         -
    0.7      4.0      2.8

     
0.6      3.8        2.3
   
 6.7      3.8      25.1
      7.3      3.8      27.4

  
   1.3        3.9         5.0
   
 6.7        3.8       25.1
      8.0        3.8       30.2

TOTAL
       Open Pit
      
 Underground
     Total Reserves

    
0.7     4.0      2.8
   
 4.7     2.8    13.3
    5.4     3.0    16.1

      
0.6      3.8        2.3
   
 12.9      3.1      40.5
    13.5      3.2      42.8

   
    1.3        3.9         5.0
   
 17.6        3.1       53.8
    18.9        3.1       58.9

 

The different sections of the Diavik mine yield goods of varying value. Harry Winston disclosed that in December it achieved the following average prices:

 

Ore Type

December 2011
Average Price per Carat
(in US dollars)

A-154 South

$165

A-154 North

$215

A-418 A Type Ore

$150

A-418 B Type Ore

$100

RPR

$55

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