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Contents

Evander

Geology: The Evander Basin is a tectonically preserved sub-basin outside the main Witwatersrand Basin and forms an asymmetric syncline, plunging to the north-east. It is structurally complex with a series of east-north-east striking normal faults. At the south-east margin of the basin, vertically to locally overturned reef is present. The only economic reef horizon exploited in the Evander Basin is the Kimberley Reef. The Intermediate Reef is generally poorly mineralised, except where it erodes the sub-cropping Kimberley Reef in the south and west of the basin.

Evander operations [Map]

Evander, 2, 5, 6, 8 and 9 Shafts. Poplar and Rolspruit areas (Kimberley Reef)
Section across Evander Basin (Not to scale)

Mineral resources

 Measured IndicatedInferred Total
Operations Tonnes
(Mt)

g/t
Gold
(000kg)
Gold
(000oz)
Tonnes
(Mt)

g/t
Gold
(000kg)
Gold
(000oz)
Tonnes
(Mt)

g/t
Gold
(000kg)
Gold
(000oz)
Tonnes
(Mt)

g/t
Gold
(000kg)
Gold
(000oz)
Underground                
Evander 2/57.710.62812 6182.010.47216786.511.36752 38616.210.901775 682
Evander 71.912.08237540.19.2814413.910.911514 85715.911.041755 655
Evander 83.711.96441 4049.211.371053 36114.311.791695 42427.211.6731810 189
Total13.311.201484 77611.311.181274 08334.711.3639512 66759.311.2967021 526
Projects – Below Infrastructure             
Evander South----21.15.461153 69633.83.981354 32654.94.552508 022
Rolspruit----29.111.5933710 8474.95.692890234.010.7436511 749
Poplar----15.610.211595 123----15.610.211595 123
Total----65.89.3061119 66638.74.191635 228104.57.4177424 894
GRAND TOTAL13.311.201484 77677.19.5873823 74973.47.5855817 895163.88.811 44446 420

Modifying factors

OperationsMCF (%) SW (cm) MW (cm)PRF (%)
Evander 2/56714319098
Evander 78515936897
Evander 87012018197
Evander South8810013197
Rolspruit8011012997
Poplar8010011697
  • MCF = Mine call factor
  • MW = Milling width
  • SW = Stoping width
  • PRF = Plant recovery factor

Ore reserves

 Proven ProbableTotal
Operations Tonnes
(Mt)
g/tGold
(000kg)
Gold
(000oz)
Tonnes
(Mt)

g/t
Gold
(000kg)
Gold
(000oz)
Tonnes
(Mt)

g/t
Gold
(000kg)
Gold
(000oz)
Underground            
Evander 2/50.86.3551630.26.17138106.326201
Evander 70.24.641270.08.48020.24.81129
Evander 81.85.66103327.06.21431 3948.86.09531 736
Total2.85.79165227.26.21441 43410.06.09601 956
Projects – Below Infrastructure         
Evander South----11.54.80551 77311.54.80551 773
Rolspruit----24.48.712136 84224.48.712136 842
Poplar----13.57.451013 23413.57.451013 234
Total----49.47.4536911 84949.47.4536911 849
GRAND TOTAL2.85.791652256.67.3041313 28359.47.2242913 805
Evander 2 and 5: grade tonnage curve (measured and indicated resources) [graph]
 
Evander 7: grade tonnage curve (measured and indicated resources) [graph]
 
Evander 8: grade tonnage curve (measured and indicated resources) [graph]
Harmony Annual Report 2009