Production and Reserves
| Production | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 |
| Heap Leach Tonnes ore mined (000s) | 5,017 | 5,349 | 8,054 | 6,518 | 5,606 | 5,141 | 4,634 |
| Tonnes ore milled (000s) | 4,023 | 5,254 | 5,298 | 5,498 | 5,470 | 5,611 | 5,631 |
| Mill feed grade (grams/tonne) |
5.55 | 4.77 | 4.49 | 4.65 | 5.15 | 3.71 | 4.54 |
| Recovery (%) | 73.3 | 78.5 | 79.4 | 81.5 | 83.1 | 78.1 | 82.6 |
| Ounces of gold poured (1) (000s) |
502 | 646 | 610 | 670 | 753 | 529 | 678 |
| Unit Production Total Cash Costs (2) | |||||||
| per tonne milled - $ | 24.00 | 22.20 | 20.60 | 18.60 | 19.50 | 20.40 | 24.00 |
| per ounce - $ | 193 | 181 | 179 | 153 | 141 | 216 | 191 |
| Table Continued Below | |||||||
| Production | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
| Tonnes ore mined (000s) | 3,303 | 6,135 | 3,887 | 5,182 | 4,967 | 4,464 |
| Tonnes ore milled (000s) | 5,654 | 5,649 | 5,696 | 5,545 | 5,577 | 5,780 |
| Mill feed grade (grams/tonne) |
4.4 | 3.4 | 2.3 | 2.4 | 3.9 | 3.7 |
| Recovery (%) | 82.1 | 81.2 | 73.0 | 72.7 | 79.7 | 76.7 |
| Ounces of gold poured (1) (000s) |
657 | 501 | 304 | 301 | 556 | 525 |
| Unit Production Total Cash Costs (2) | ||||||
| per tonne milled – $ | 23.24 | 24.40 | 28.99 | 29.27 | 43.64 | 41.80 |
| per ounce – $ | 200 | 274 | 544 | 540 | 438 | 460 |
(1) Centerra’s equity interest is 100%
(2) Total cash cost per ounce is a non-GAAP measure
Reserves and Resources
The following table shows Kumtor’s estimated gold reserves and resources at December 31, 2009:
| Tonnes (000s) | Grade Grams/tonne | Contained Gold Ounces (000s) | |
| Proven | 1,659 | 2.1 | 113 |
| Probable | 54,201 | 3.1 | 5,361 |
| Total reserves | 55,860 | 3.0 | 5,474 |
| Measured | 18,480 | 2.4 | 1,441 |
| Indicated | 10,372 | 2.3 | 760 |
| Total measured and indicated resources | 28,852 | 2.4 | 2,201 |
| Inferred resources – Open Pit | 3,793 | 2.5 | 309 |
| Stockwork Underground | 1,700 | 11.4 | 621 |
| Inferred resources SB Underground | 3,203 | 17.0 | 1,751 |
Updated April 19, 2010