Boroo Production and Reserves

PRODUCTION 2003 2004 2005 2006 2007 2008 2009 2010 2011
Heap Leach Tonnes ore mined (000s) _ _ _ _ 3,601 3,629 3,481 1,694 0
Tonnes ore mined (000s) 145 1,884 2,865 3,082(4) 2,362 2,416 2,913 2,399 0
Tonnes ore milled (000s) 113 1,850 2,231 2,387 2,549 2,496 2,077 2,466 2,340
Average Mill feed grade 
(grams/tonne)		 2.9 4.5 4.2 4.3 3.6 2.7 2.6 1.9(6) 1.1
Recovery (%) 97.0 93.7 91.5 87.0 85.3 77.7 72.9 71.8 68.9
Ounces of gold poured (1)(2)
(000s)		 4 246 286 283 255 193 151 111 59
UNIT PRODUCTION TOTAL CASH COSTS (3) 
per tonne milled - $ _ 17.57 23.49 25.77 24.35 29.52 33.04 27.08(6) 17.56
per ounce - $  _ 149 183 217 244 382 456 601(6) 694
  1. 100% basis, Centerra’s equity interest is 100% since October 17, 2007
  2. Gold poured in 2003 & 2004 includes pre-commissioning production for December 2003 and January and February 2004
  3. Total Cash Cost is a Non-GAAP measure
  4. Excludes heap leach ore
  5. Heap leach included as of 2007
  6. Restated to exclude community investments costs

 

RESERVES AND RESOURCES

The following table shows Boroo's estimated gold reserves and resources at December 31, 2011:

  TONNES
(000s) 		 GRADE
Grams/tonne		 CONTAINED GOLD
-ounces (000s) 
RESERVES      
Proven 8,767 0.8 215
Probable 891 2.9 83
Total reserves  9,658 1.0 298

RESOURCES		      
Measured  452 2.2 32
Indicated  4,464 1.5 210
Total measured and indicated resources 4,916 1.5 242
Inferred resources 7,323 1.0 233
Updated: 2012-03-07

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