JORC Resources and Reserves in Accordance with JORC Code 2012 (1)(8) as of 31/12/2016, WAI April 2017 (1)(8)

Total
Mineral ResourcesOre Reserves
CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)
Measured 8,558 1.21 0.33 Proven 8,416 1.15 0.31
Indicated 135,865 0.91 3.99 Probable  86,755 0.97 2.70
M+I 144,423 0.93 4.33 P+P 95,171 0.98 3.01
Inferred 118,944 0.71 2.73        

 

Sub-Total: Non-Refractory (Open Pit and Underground)
Mineral ResourcesOre Reserves
CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)
Measured  31 1.19  0.001 Proven  24 1.16  0.001
Indicated 19,041 1.02 0.62 Probable  8.198 1.50 0.40
M+I 19,072 1.02 0.63 P+P 8.222 1.50 0.40
Inferred 11,273 0.81 0.29        

 

Sub-Total: Refractory (Open Pit)
Mineral ResourcesOre Reserves
CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)
Measured  8.527 1.21  0.33 Proven 8,392 1.15  0.31
Indicated 116,824 0.90  3.37 Probable   78,557 0.91  2.30
M+I 125,351 0.92  3.70 P+P  86,949 0.93  2.61
Inferred 107,671 0.70     2.44        

 

Sub-Total: Open Pit (refractory and non-refractory)
Mineral ResourcesOre Reserves
CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)
Measured 8,558 1.21 0.33 Proven 8,416 1.15 0.31
Indicated 135,015 0.87 3.77 Probable  85,657 0.90 2.49
M+I 143,573 0.89 4.10 P+P 94,073 0.93 2.80
Inferred 118,455 0.70 2.68        

 

Sub-Total: Open Pit Non-Refractory
Mineral ResourcesOre Reserves
CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)
Measured  31 1.19  0.001 Proven  24 1.16  0.001
Indicated 18,191 0.68 0.40 Probable  7.100 0.83 0.19
M+I 18,222 0.68 0.40 P+P 7.124 0.83 0.19
Inferred 10,784 0.68 0.24        

 

Sub-Total: Open Pit (Refractory)
Mineral ResourcesOre Reserves
CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)CategoryTonnage (kt)Avg. Grade (g/t)Contained Metal (Moz)
Measured 8,527 1.21  0.33 Proven 8,392 1.15  0.31
Indicated 116,824 0.90  3.37 Probable   78,557 0.91  2.30
M+I 125,351 0.92  3.70 P+P 86,949 0.93  2.61
Inferred 107,671 0.70     2.44        

 

 

 

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