Resources and Reserves

Sukari Open Pit Resource

 MeasuredIndicatedTotal Measured + IndicatedInferred
Cut-off
g/t AU
Tonnes
(Mt)
Grade
(g/t AU)
Tonnes
(Mt)
Grade
(g/t AU)
Tonnes
(Mt)
Grade
(g/t AU)
Gold
(Moz)
Tonnes
(Mt)
Grade
(g/t AU)
Gold
(Moz)
0.3183.80.98201.51.06385.41.0212.6439.51.11.40
0.4145.71.15164.31.22310.01.1911.8631.91.31.33
0.5118.71.31135.11.39253.81.3511.0126.11.51.26
0.782.61.6297.41.70179.91.669.6018.71.91.14
1.052.92.0664.42.14117.32.117.9512.52.40.96
  • Totals may not equal the sum of the components due to rounding adjustments.
  • The mineral resource estimate is based on the mined surface as at 30 June 2013 and adjusted for historical, current and planned underground mining. All available assays as at June 2013.
  • Resource data set comprises 234,788 two metre down hole composites and surface rock chip samples.
  • Proven and Probable mineral reserves are included in mineral resources.
  • The resources are estimates of recoverable tonnes and grades using Multiple Indicator Kriging with block support correction.
  • Measured resources lie in areas where drilling is available at a nominal 25 x 25 metre spacing, Indicated resources occur in areas drilled at approximately 25 x 50 metre spacing and Inferred resources exist in areas of broader spaced drilling.
  • The resource model extends from 9700mN to 12200mN and to a maximum depth of 0mRL (a maximum depth of approximately 1000 metres below wadi level).

Sukari Underground Resource

ResouceTonnes
('000 t)
Grade
(g/t AU)
Contained Gold
('000 oz)
Measured53712.8222
Indicated3,8055.1622
Total M&I4,3426.1844
Inferred2,9255.2489
  • Totals may not equal the sum of the components due to rounding adjustments.
  • The underground resource has been generated from available drilling (35,000 metres and 12,300 face samples) and modelled using a 2g/t cut off to determine resource outlines.

Sukari Open Pit Mineral Reserve

ClassificationTonnes
(Mt)
Grade
(g/t AU)
Contained Gold
(Moz)
Proven1121.043.76
Probable1001.163.73
Stockpile160.450.23
Total2301.057.70
  • Totals may not equal the sum of the components due to rounding adjustments.
  • Based on mined surface as at 30 September 2013 and a gold price of US$1,300 per ounce.
  • The change from the previous US$1,100 to US$1,300 gold price has increased the new reserve by approximately 0.6Mozs.
  • Cut-off grades (gold): CIL oxide 0.20g/t, CIL transitional 0.45g/t, CIL sulphide 0.44g/t, Dump Leach oxide 0.08g/t.
  • Designed underground reserves detailed below do not form part of the Open Pit Reserve.

Sukari Underground Mineral Reserve

ClassificationTonnes
('000 t)
Grade
(g/t AU)
Contained Gold
('000 oz)
Proven52011.4191
Probable1,8156.0349
Total2,3357.2540
  • Totals may not equal the sum of the components due to rounding adjustments.
  • Stopes for reserves are then designed using a 3g/t cut off and mining dilution applied at 15% @ 0.8g/t as all stopes are located in mineralised porphyry and 10% mining loss is then assumed to allow for stope bridges and material left in stopes after mining.