Resources and Reserves

Mineral Resources and Mineral Reserves

Mineral Resources consist of sand dumps, slimes dams and silted ‘vlei’ areas and dams. Before dumps are included as Mineral Resources, they are evaluated by drilling and an engineering study is undertaken to determine infrastructure needs.

Competent persons

Competent Persons Title Address Qualifications Years
Mpfariseni Mudau
Pr.Sci.Nat. 400305/12		 Director of The RVN
Group Proprietary Limited		 Willowbrook Villas 21,
Van Hoof St,
Roodepoort, 1724		 BSc (Hons) – Geology,
MSc (Mining Engineering)		 15
Professor Steven Rupprecht
FSAIMM 701013		 Associate Principal Mining Engineer of the RVN Group Willowbrook Villas 21,
Van Hoof St,
Roodepoort, 1724		 BSc. Mining Engineering
PhD. Mechanical
Engineering		 34
Diana van Buren
Pr.Sci.Nat. 400107/14		 Partner of Sound Mining Solution Proprietary Limited Sound Mining House,
2A Fifth Avenue,
Rivonia, 2128		 BSc (Hons) – Geology 13
Vaughn Duke
Pr. Eng 940314
FSAIMM 37179		 Partner of Sound Mining Solution Proprietary Limited Sound Mining House,
2A Fifth Avenue,
Rivonia, 2128		 BSc Mining Engineering
(Hons), MBA		 37

Mineral Resources as at 30 June 2021

  MEASURED INDICATED
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		 Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz
Ergo 1 282.95 0.309 87.42 2.81 574.95 0.250 143.70 4.61
FWGR 244.85 0.337 82.44 2.65 – – – –
Total Mineral Resources
as at 30 June 2021		 527.80 0.325 169.86 5.46 574.95 0.250 143.70 4.61
Total Mineral Resources
as at 30 June 2020		 548.24 0.325 177.96 5.73 379.49 0.251 95.08 3.06
  INFERRED TOTAL
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		 Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz
Ergo 1 21.32 0.240 5.12 0.16 879.22 0.269 236.24 7.58
FWGR – – – – 244.85 0.337 82.44 2.65
Total Mineral Resources
as at 30 June 2021		 21.32 0.240 5.12 0.16 1124.07 0.284 318.68 10.23
Total Mineral Resources
as at 30 June 2020		 207.43 0.240 349.83 1.60 1 135.16 0.284 322.87 10.39

1 1.49Moz (192.79Mt @ 0.24g/t) of the Daggafontein TSF reclassified from Inferred Mineral Resource to Indicated Mineral Resource.
2 The figures contained in the tables are rounded, which may result in minor computational discrepancies which are not deemed to be significant


Mineral Resources as at 30 June 2020

  MEASURED INDICATED
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		 Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz
Ergo 310.26 0.313 97.22 3.13 379.49 0.251 95.08 3.06
FWGR 237.98 0.339 85.85 2.60 – – – –
Total Mineral Resources
as at 30 June 2020		 548.24 0.325 39.94 5.73 379.49 0.251 95.08 3.06
Total Mineral Resources
as at 30 June 2019		 557.33 0.322 0.322 5.77 339.69 0.253 85.85 2.76
  INFERRED TOTAL
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		 Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz
Ergo 207.43 0.240 49.83 1.60 897.18 0.270 242.13 7.79
FWGR – – – – 237.98 0.339 80.74 2.60
Total Mineral Resources
as at 30 June 2020		 207.43 0.240 49.83 1.60 1135.16 0.284 322.87 10.39
Total Mineral Resources
as at 30 June 2019		 200.51 0.199 39.94 1.28 1 097.53 0.278 305.42 9.81

Mineral Resources reported include Mineral Reserves


Mineral Reserves as at 30 June 2021

  PROVED
Delivered to plant
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		  
Ergo 29.36 0.300 8.81 0.28  
FWGR 222.27 0.337 74.79 2.40  
Total Mineral Resources
as at 30 June 2021		 251.63 0.333 86.73 2.68  
Total Mineral Resources
as at 30 June 2020		 270.66 0.333 90.16 2.90  
  PROBABLE
Delivered to plant
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		  
Ergo 253.59 0.310 78.61 2.53  
FWGR 12.88 0.330 4.24 0.14  
Total Mineral Resources
as at 30 June 2021		 266.47 0.311 82.85 2.67  
Total Mineral Resources
as at 30 June 2020		 277.59 0.316 87.80 2.83  
  TOTAL MINERAL RESERVES
Delivered to plant
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz
Ergo 282.95 0.309 87.42 2.81
FWGR 235.14 0.336 79.03 2.54
Total Mineral Resources
as at 30 June 2021		 518.10 0.321 166.45 5.35
Total Mineral Resources
as at 30 June 2020		 548.25 0.325 177.96 5.73

Mineral Reserves as at 30 June 2020

  PROVED
Delivered to plant
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		  
Ergo 45.37 0.300 13.61 0.44  
FWGR 225.29 0.340 76.55 2.46  
Total Mineral Resources
as at 30 June 2020		 270.66 0.333 90.16 2.90  
Total Mineral Resources
as at 30 June 20191		 232.75 0.350 81.38 2.61  

1 Proved Mineral Reserves incorrectly disclosed as 2.61Moz (232.75Mt@ 0.352g/t) in the 30 June 2019 annual integrated report

  PROBABLE
Delivered to plant
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz		  
Ergo 264.89 0.316 83.61 2.69  
FWGR 12.70 0.330 4.19 0.14  
Total Mineral Resources
as at 30 June 2020		 277.59 0.316 87.80 2.83  
Total Mineral Resources
as at 30 June 20191		 324.58 0.303 98.26 3.16  

1 Probable Mineral Reserves incorrectly disclosed as 3.16Moz (324.58Mt@ 0.311g/t) in the 30 June 2019 annual integrated report

  TOTAL MINERAL RESERVES
Delivered to plant
  Tonnes
Mt		 Grade
g/t		 Contents
Au tonnes		 Contents
Moz
Ergo 310.26 0.313 97.22 3.13
FWGR 237.99 0.339 80.74 2.60
Total Mineral Resources
as at 30 June 2020		 548.25 0.325 177.96 5.73
Total Mineral Resources
as at 30 June 2019		 557.33 0.322 179.63 5.77

The figures contained in the tables are rounded, which may result in minor computational discrepancies which are not deemed to be significant

IN THIS SECTION

Presentations

Conference [icon]

SMI - Swiss Mining Institute 2 November 2021 (PDF - 3.63MB)

IN THE MEDIA

LATEST NEWS

Results

Annual Integrated Report 2021

Annual Integrated Report 2021 (PDF - 11.94 MB)