South Deep gold mine - Operating statistics

      Historic performance  
  Units   Dec 2017   Dec 2016 Dec 2015  
Development              
Total development m   6,897   6,933 4,701  
– Waste development m   2,854   1,405 990  
– Reef development m   4,043   5,528 3,711  
Underground mining (including development)              
Total destress mined m2   33,419   32,333 30,499  
Total mined kt   1,610   1,722 1,239  
– Waste mined kt   189   111 88  
– Ore mined kt   1,421   1,611 1,151  
Mined grade (ore only) g/t   5.9   5.6 5.4  
Mined grade (ore and waste) g/t   5.2   5.3 5.1  
Gold broken kg   8,365   9,063 6,260  
Processing              
TSF mining kt   433   507 214  
TSF value g/t   0.2   0.2 0.3  
Waste treated kt   165   107 51  
Underground ore treated kt   1,482   1,634 1,231  
Total tonnes treated kt   2,081   2,249 1,496  
Underground ore yield g/t   5.3   5.2 4.8  
Head grade (combined)1 g/t   4.4   4.2 4.3  
Yield (combined) g/t   4.2   4.0 4.1  
Plant Recovery factor (underground) %   96.5   96.5 96.5  
Plant recovery factor (surface) %   46   46 46  
Total gold production kg   8,748   9,032 6,160  
Gold sold koz   282   289 198  
Financials              
Gold price received US$/oz     1,256     1,238   1,173  
ZAR/kg   538,344   584,894 478,263  
Exchange rate (annual average) ZAR:US$   13.33   14.70 12.68  
Cost of sales before amortisation and depreciation Rm Rm   4,062   3,993 3,000  
  ZAR/kg   464,335   442,095 487,016  
  Rm   1,099   1,144 847  
Capital expenditure ZAR/kg   125,629   126,705 137,719  
  US$/oz   291   268 338  
AIC ZAR/kg   600,109   583,059 635,622  
  US$/oz   1,400   1,234 1,559  
AISC ZAR/kg   574,406   570,303 607,429  
  US$/oz   1,340   1,207 1,490  
Life-of-mine              
Mineral Reserves Mt   216.8   217.6 218.8  
Mineral Reserves head grade g/t   5.4   5.3 5.3  
Mineral Reserves Moz   37.4   37.3 37.3  
1 Includes TSF and underground waste development
  Rounding off of figures presented in this report may result in minor computational discrepancies. Where this occurs, it is not deemed significant.