Kumtor Production and Reserves
|
PRODUCTION |
2020 |
2019 |
2018 |
2017 |
2016 |
||
|---|---|---|---|---|---|---|---|
|
Tonnes ore mined (000s) |
705 |
10,970 |
7,356 |
5,084 |
8,911 |
||
|
Tonnes milled (000s) |
6,323 |
5,968 |
6,325 |
6,246 |
6,303 |
||
|
Average mill head grade
|
3.27 |
3.69 |
3.29 |
3.58 |
3.44 |
||
|
Mill Recovery (%) |
81.4 |
83.5 |
79.3 |
79.1 |
79.2 |
||
|
Ounces of gold produced (000s) |
556 |
600 |
535 |
563 |
551 |
||
|
|
|||||||
|
Mining costs – total - $ per tonne mined material |
1.52 |
1.26 |
1.17 |
1.10 |
1.27 |
||
|
Milling costs - $ per tonne milled material |
10.97 |
12.00 |
10.65 |
10.69 |
9.87 |
||
|
Production costs per ounce of gold sold - $(2) |
342 |
381 |
394 |
nr |
nr |
||
|
All-in Sustaining Costs(1) on a by-product basis per |
741 |
598 |
694 |
698 |
640 |
||
(1) Non-GAAP measure. See discussion under “Non-GAAP Measures” in Company’s MD&A and Annual Information Form
(2) Production costs per ounce of gold sold are included as a new measure and is considered the nearest GAAP measure to All-in Sustaining Costs, not reported prior to 2018.
RESERVES AND RESOURCES
The following table shows Kumtor’s estimated gold reserves and resources at December 31, 2020:
|
|
TONNES
|
GRADE
|
CONTAINED GOLD
|
|---|---|---|---|
|
Proven |
10,693 |
1.42 |
487 |
|
Probable |
59,613 |
2.88 |
5,525 |
|
Total reserves |
70,306 |
2.66 |
6,013 |
|
Measured |
9,478 |
3.44 |
1,048 |
|
Indicated |
16,054 |
2.39 |
1,232 |
|
Total measured and indicated resources |
25,532 |
2.78 |
2,280 |
|
|
|
|
|
|
Inferred resources – Open Pit |
20,864 |
1.97 |
1,324 |
|
Inferred resources - Underground |
13,100 |
7.46 |
3,141 |
|
PRODUCTION |
1997 |
1998 |
1999 |
2000 |
2001 |
2002 |
2003 |
2004 |
2005 |
|---|---|---|---|---|---|---|---|---|---|
|
Tonnes ore mined (000s) |
5,017 |
5,349 |
8,054 |
6,518 |
5,606 |
5,141 |
4,634 |
3,303 |
6,135 |
|
Tonnes ore milled (000s) |
4,023 |
5,254 |
5,298 |
5,498 |
5,470 |
5,611 |
5,631 |
5,654 |
5,649 |
|
Mill feed grade
|
5.55 |
4.77 |
4.49 |
4.65 |
5.15 |
3.71 |
4.54 |
4.4 |
3.4 |
|
Recovery (%) |
73.3 |
78.5 |
79.4 |
81.5 |
83.1 |
78.1 |
82.6 |
82.1 |
81.2 |
|
Ounces of gold poured (1) (000s) |
502 |
646 |
610 |
670 |
753 |
529 |
678 |
657 |
501 |
|
UNIT PRODUCTION CASH COSTS (2) |
|
|
|||||||
|
per tonne milled - $ |
24.00 |
22.20 |
20.60 |
18.60 |
19.50 |
20.40 |
24.00 |
23.24 |
24.40 |
|
per ounce - $ |
193 |
181 |
179 |
153 |
141 |
216 |
191 |
200 |
274 |
Table Continued Below
|
PRODUCTION |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
2012 |
2013 |
2014 |
2015 |
|---|---|---|---|---|---|---|---|---|---|---|
|
Tonnes ore mined (000s) |
3,887 |
5,182 |
4,967 |
4,464 |
5,765 |
6,020 |
4,955 |
7,289 |
8,640 |
6,583 |
|
Tonnes ore milled (000s) |
5,696 |
5,545 |
5,577 |
5,780 |
5,594 |
5,815 |
4,756 |
5.596 |
5,840 |
5,729 |
|
Mill feed grade
|
2.3 |
2.4 |
3.9 |
3.7 |
4.0 |
3.8 |
2.8 |
4.3 |
3.9 |
3.6 |
|
Recovery (%) |
73.0 |
72.7 |
79.7 |
76.7 |
79.5 |
80.8 |
75.6 |
79.3 |
78.0 |
78.8 |
|
Ounces of gold poured (1) (000s) |
304 |
301 |
556 |
525 |
568 |
583 |
315 |
600 |
567 |
521 |
|
UNIT PRODUCTION CASH COSTS (2) |
|
|
||||||||
|
per tonne milled – $ |
28.99 |
29.27 |
43.64 |
41.80 |
41.5(3) |
48.38 |
35.28 |
37.11 |
34.23 |
29.59 |
|
per ounce – $ |
544 |
540 |
438 |
460 |
409(3) |
482 |
532 |
357 |
356 |
326 |
(1) Centerra’s equity interest is 100%
(2) Unit production cash cost per ounce is a non-GAAP measure, Starting in 2013 unit cost measures are adjusted operating costs on a sales basis, which is a non-GAAP measure. As a result of Kumtor’s restated Investment Agreement signed in 2009, operating costs and total cash costs per ounce measures for 2009, 2008 and 2007 have been restated to exclude operating and revenue-based taxes.
(3) Restated to exclude community investments costs.
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