Boroo Production and Reserves

PRODUCTION

2003

2004

2005

2006

2007

2008

2009

2010

Heap Leach Tonnes ore mined (000s)

_

_

_

_

3,601

3,629

3,481

1,694

Tonnes ore mined (000s)

145

1,884

2,865

3,082(4)

2,362

2,416

2,913

2,399

Tonnes ore milled (000s)

113

1,850

2,231

2,387

2,549

2,496

2,077

2,466

Average Mill feed grade 
(grams/tonne)

2.9

4.5

4.2

4.3

3.6

2.7

2.6

1.9(6)

Recovery (%)

97.0

93.7

91.5

87.0

85.3

77.7

72.9

71.8

Ounces of gold poured (1)(2)
(000s)

4

246

286

283

255

193

151

111

UNIT PRODUCTION CASH COSTS (3) 

per tonne milled - $

_

17.57

23.49

25.77

24.35

29.52

33.04

27.08(6)

 

per ounce - $ 

_

149

183

217

244

382

456

601(6)

 

Table Continued Below


 

PRODUCTION

2011

2012

2013 

 

 

 

 

 

Heap Leach Tonnes ore mined (000s)

_

143

 

 

 

 

 

Tonnes ore mined (000s)

_

907

 

 

 

 

 

Tonnes ore milled (000s)

2,340

2,382

2,394 

 

 

 

 

 

Average Mill feed grade 
(grams/tonne)

1.1

1.3

1.1 

 

 

 

 

 

Recovery (%)

68.9

64.0

57.6 

 

 

 

 

 

Ounces of gold poured (1)(2)
(000s)

59

72

90 

 

 

 

 

 

UNIT PRODUCTION CASH COSTS (3) 

per tonne milled - $

17.56

21.07

23.33 

 

 

 

 

 

 

per ounce - $ 

694

699

619 

 

 

 

 

 

 

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.        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, 2013:

 

TONNES
(000s) 

GRADE
Grams/tonne

CONTAINED GOLD
Ounces (000s) 

RESERVES

 

 

 

Proven

2,364

0.6

49

Probable

-

-

-

Total reserves 

2,364

0.6

49

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

235