Cerro Corona mine - Operating statistics

  Historic performance  
  Units   Dec 2017   Dec 2016 Dec 2015  
Open pit mining  
Total mined kt   15,744   14,452 12,962  
- Waste mined kt   8,659   7,391 6,120  
- Sulphide tonnes mined kt   7,085   7,061 6,842  
Strip ratio (waste: ore tonnes) ratio   1.2   1.0 0.9  
Gold mined grade g/t   1.08   1.05 1.05  
Copper mined grade %   0.49   0.52 0.50  
Processing  
Sulphide tonnes milled kt   6,796   6,977 6,710  
Gold head grade g/t   1.08   1.03 1.07  
Copper head grade %   0.52   0.53 0.52  
Produced  
Concentrate produced kt   153   156 145  
Gold sold koz   164.7   149.1 158.8  
Copper sold kt   30.4   29.9 28.2  
Gold equivalent oz sold koz   313.8   268.9 293.3  
Plant recovery (Au)2 %   70.4   67.5 71.9  
Plant recovery (Cu) %   89.0   86.6 86.1  
Financials  
Average Au price received US$/oz   1,255   1,247 1,163  
Average Cu price received US$/lb   2.78   2.2 2.5  
Cost of sales before amortisation and depreciation US$ m   154.3   140 144  
US$/oz 492   518   484    
Capital expenditure US$ m   34   43 65  
US$/oz 108   160   219    
All-in Cost (AIC) US$/oz   203   499 718  
All-in Sustaining Cost (AISC)1 US$/oz   203   499 718  
Life-of-mine  
Mineral Reserves Mt   86.2   46.1 53.1  
Mineral Reserves Au Head Grade g/t   0.70   0.88 0.90  
Mineral Reserves Cu Head Grade %   0.40   0.45 0.46  
Mineral Reserves - Au Moz   1.9   1.3 1.5  
Mineral Reserves - Cu Mlb   767   456 534  
1 AISC and AIC calculated according to World Gold Council (WGC) standard, with copper revenue treated as a by-product. Rounding off of figures presented in this report may result in minor computational discrepancies. Where this occurs, it is not deemed significant
2 Some transitional material processed with hypogene ore in 2016