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Resources and reserves

MINERAL RESOURCES AND RESERVES – A SUMMARY

Harmony’s statement of Mineral Resources and Mineral Reserves as at 30 June 2014 is produced in accordance with the South African Code for the Reporting of Mineral Resources and Mineral Reserves (SAMREC) and the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC).

The company’s attributable gold equivalent mineral resources are declared as 133.8Moz as at 30 June 2014, a 9.4% decrease year-on-year from the 147.7Moz declared on 30 June 2013. This 9.4% decrease collectively represents depletion during the year and geology – and scope-related changes. The gold resource ounces in South Africa represent 69%, while the Papua New Guinea gold and gold equivalent ounces represent 31% of Harmony’s total gold equivalent resources as at 30 June 2014.

As at 30 June 2014, Harmony’s attributable gold equivalent mineral reserves amounted to 49.5Moz of gold, a 3.9% decrease from the 51.5Moz declared on 30 June 2013. The 3.9% decrease collectively represents depletion during the year, a change in reserves from surface sources together with some scope changes at some of the underground operations. The gold reserve ounces in South Africa represent 57% while the Papua New Guinea gold and gold equivalent ounces represent 43% of Harmony’s total mineral reserves as at 30 June 2014.

Mineral resources are reported inclusive of mineral reserves. We use certain terms in this report such as ‘measured’, ‘indicated’ and ‘inferred’ resources, which the United States’ Securities Exchange Commission guidelines the strictly prohibit US-registered companies from including in their filings with the sec. US investors are advised to consider closely the disclosure in our Form 20-F.

ASSUMPTIONS

In converting the mineral resources to mineral reserves, the following commodity prices and exchange rates were applied:

  • A gold price of US$1 300/oz
  • An exchange rate of US$/ZAR10.17
  • The above parameters resulted in a rand gold price of R425 000/kg for the South African assets
  • The Hidden Valley mine and Wafi-Golpu project in the Morobe Mining Joint Venture used commodity prices of US$1 250/oz Au, US$21/oz Ag, US$15/lb Mo and US$3.10/lb Cu at an exchange rate of A$0.90 per US$
  • Gold equivalent ounces are calculated assuming US$1 400/oz Au, US$3.10/lb Cu and US$23.00/oz Ag, and assuming a 100% recovery for all metals. These are the same assumptions as those used in the 2012 pre-feasibility study for the calculation of gold equivalent ounces

AUDITING

Harmony’s South African mineral resources and mineral reserves have been comprehensively audited by a team of internal competent persons that functions independently of the operating units. The internal audit team verifies compliance with the Harmony code of resource blocking, valuation, resource classification, cut-off calculations, development of life-of-mine plans and SAMREC compliant statements from each operation and project which supports Harmony’s annual mineral resources and mineral reserves declaration. This audit process is specifically designed to comply with the requirements of internationally recognised procedures and standards such as:

  • The South African Code for the Reporting of Mineral Resources and Mineral Reserves (SAMREC)
  • Industry Guide 7 of the Securities and Exchange Commission
  • Sarbanes-Oxley requirements
  • The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC) which complies with SAMREC

Harmony’s South African Mineral Resources were reviewed and audited by SRK Consulting Engineers and Scientists for compliance with SAMREC. The Golpu Mineral Resource was audited by AMC Consultants Pty Ltd for compliance with the standards set out in JORC.

COMPETENT PERSON’S DECLARATION

In South Africa, Harmony employs an ore reserve manager at each of its operations who takes responsibility for the compilation and reporting of mineral resources and mineral reserves at their operation. In Papua New Guinea, competent persons are appointed for the mineral resources and mineral reserves for specific projects and operations.

The mineral resources and mineral reserves in this report are based on information compiled by the following competent persons:

  • Resources and reserves South Africa:

    Jaco Boshoff, BSc (Hons), MSc, MBA, Pr. Sci. Nat, who has 19 years’ relevant experience and is registered with the South African Council for Natural Scientific Professions (SACNASP) and a member of the South African Institute of Mining and Metallurgy (SAIMM).

  • Resources and reserves Papua New Guinea:

    Gregory Job, BSc, MSc, who has 26 years’ relevant experience and is a member of the Australian Institute of Mining and Metallurgy (AusIMM).

Mr Boshoff and Mr Job are full-time employees of Harmony Gold Mining Company Limited. These competent persons consent to the inclusion in the report of the matters based on the information in the form and context in which it appears.

Jaco Boshoff
23 October 2014

Greg Job
23 October 2014

RECONCILIATION FY14/FY13

MINERAL RESOURCES

As at 30 June 2014, attributable gold equivalent mineral resources were 133.8Moz, down from 147.7Moz in June 2013. The following table and graph show the year-on-year reconciliation of the mineral resources.

Gold and gold equivalent mineral resources reconciliation Tonnes Moz
June 2013 – gold and gold equivalents 4 594 147.7
Reductions    
Mined during FY14 (47) (1.5)
Geology and scope changes (398) (12.8)
Increases    
Gold equivalents 12 0.4
June 2014 – gold and gold equivalents 4 161 133.8

MINERAL RESERVES

As at 30 June 2014, Harmony’s attributable gold equivalent mineral reserves were 49.5Moz, down from 51.5Moz. The year-on-year mineral reserves reconciliation is shown below.

Gold and gold equivalent mineral reserves reconciliation Tonnes Moz
June 2013 – gold and gold equivalents 1 601 51.5
Reductions    
Mined during FY14 (40) (1.3)
Phakisa scope changes (89) (2.9)
Increases    
Surface sources 39 1.3
Other 28 0.9
June 2014 – gold and gold equivalents 1 539 49.5

Mineral resources statement

GOLD

Measured resources Indicated resources Inferred resources Total mineral resources
  Tonnes
(Mt)
Grade
(g/t)
Gold
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Gold
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Gold
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Gold
(000oz)
South Africa underground
             
Free State             
Gold            
Bambanani1.916.409811.916.40981
Joel4.77.831 1887.18.391 9161.07.12221 12.88.093 325
Masimong9.88.112 5595.97.331 39452.85.9210 050 68.56.3614 003
Phakisa7.09.542 14413.812.265 45927.68.327 388 48.59.6214 991
Target 18.67.302 0139.77.712 4152.05.36340 20.37.314 768
Target 20.0514.00200.115.52670.215.1487
Target 38.28.922 3998.08.022 0693.76.23739 19.98.065 157
Freddies 96.010.612 04529.68.097 690 35.68.519 735
Tshepong19.311.277 0133.510.671 1858.18.592 243 30.910.5010 441
Unisel 7.96.861 7465.17.691 2725.17.301 18818.17.224 200
Total Free State underground67.49.2320 00759.49.3417 822129.87.1629 859256.68.2167 688
West Rand             
Doornkop South Reef3.17.757745.78.091 49522.06.244 411 30.86.746 680
Kusasalethu Main Reef0.26.94540.26.9454
Total3.17.757745.78.091 49522.26.254 46531.16.746 734
Kusasalethu7.110.752 46118.39.325 4913.29.16938 28.69.668 890
Total West Rand10.29.843 23524.19.036 98625.46.615 40359.78.1415 624
Total South Africa underground77.79.3123 24283.49.2524 808155.27.0735 262316.38.1983 312
South Africa surface
             
Kraaipan Greenstone Belt            
Kalgold15.40.6130315.90.834257.71.08267 38.90.79995
Free State Region – surface             
Free State (Phoenix) 95.30.2987395.30.29873
Free State (St Helena) 258.70.272 227258.70.272 227
Free State (Other):            
– WRD3.90.516528.20.45408 32.10.46473
– Slimes dams660.20.224 70815.50.1994675.60.224 802
– Subtotal664.10.224 77343.60.36502707.70.235 275
Total Free State354.00.273 100664.10.224 77343.60.365021 061.70.258 375
Total Kalgold Tailings Dam22.00.2719122.00.27191
Total South Africa surface (incl Kalgold)391.30.293 594680.00.245 19851.30.477691 122.60.269 561
Total SA 469.0 26 836763.4 30 006206.5 36 0311 438.9 92 873
Papua New Guinea1
             
Hidden Valley1.11.144046.61.572 3602.71.2210750.41.552 507
Hamata0.091.2842.12.141450.11.9052.32.10159
Wafi56.71.723 14611.31.30475 68.11.653 621
Golpu428.20.618 434108.70.481 669 536.90.5910 103
Nambonga 19.90.7950519.90.79505
Total Papua New Guinea1.21.1544533.70.8214 085142.80.602 761677.60.7816 890
Grand total470.2 26 8801 297.0 44 091349.3 38 7922 116.5 109 763

GOLD EQUIVALENTS1

Measured resources Indicated resources Inferred resources Total mineral resources
  Tonnes
(Mt)
Au eq
(000oz)
Tonnes
(Mt)
Au eq
(000oz)
Tonnes
(Mt)
Au eq
(000kg)
Tonnes
(Mt)
Au eq
(000oz)
Silver        
Hidden Valley1.11446.67922.74550.4850
Total1.11446.67922.74550.4850
Copper        
Golpu428.219 521108.73 416536.922 937
Nambonga19.920419.9204
Total428.219 521128.63 620 556.823 141
Total silver and copper as gold equivalents1.114474.820 313131.33 665607.323 991
Total Papua New Guinea including gold equivalents1.258533.734 398142.86 426677.640 881
Total Harmony including equivalents470.226 8941 297.064 404349.342 4572 116.5133 754

OTHER METALS

Measured resources Indicated resources Inferred resources Total mineral resources
Tonnes
(Mt)
Grade
(g/t)
Ag
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Ag
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Ag
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Ag
(000oz)
Papua New Guinea1
                    
Silver             
Hidden Valley1.121.5175046.629.6044 3712.728.502 449 50.429.3747 613
Golpu428.21.1415 664108.70.883 090 536.91.0918 754
Nambonga19.92.871 83619.92.871 836
Total1.121.51750474.83.9360 035131.31.767 418607.33.4968 203

 

Measured resources Indicated resources Inferred resources Total mineral resources
Tonnes
(Mt)
Grade
(%)
Cu
(Mlb)
Tonnes
(Mt)
Grade
(%)
Cu
(Mlb)
Tonnes
(Mt)
Grade
(%)
Cu
(Mlb)
Tonnes
(Mt)
Grade
(%)
Cu
(Mlb)
Copper                        
Golpu 428.2 0.93 8 809 108.7 0.64 1 544 536.9 0.87 10 353
Nambonga 19.9 0.21 42 19.9 0.21 42
Total 474.8 0.93 8 809 128.6 0.58 1 636 556.8 0.85 10 445

 

Measured resources Indicated resources Inferred resources Total mineral resources
Tonnes
(Mt)
Grade
(ppm)
Mo
(Mlb)
Tonnes
(Mt)
Grade
(ppm)
Mo
(Mlb)
Tonnes
(Mt)
Grade
(ppm)
Mo
(Mlb)
Tonnes
(Mt)
Grade
(ppm)
Mo
(Mlb)
Molybdenum                        
Golpu 428.2 98.32 93 108.7 76.15 18 536.9 93.83 111

 

Measured resources Indicated resources Inferred resources Total mineral resources
  Tonnes
(Mt)
Grade
(kg/t)
U308
(Mlb)
Tonnes
(Mt)
Grade
(kg/t)
U308
(Mlb)
Tonnes
(Mt)
Grade
(kg/t)
U308
(Mlb)
Tonnes
(Mt)
Grade
(kg/t)
U308
(Mlb)
South Africa
            
Uranium            
Free State underground            
Masimong6.70.29461.40.162168.10.1725
Tshepong6.40.19314.00.23710.50.12330.90.1812
Phakisa7.00.17313.90.17527.60.14848.50.1516
Total13.40.18534.60.221699.50.1532147.50.1754
Total South Africa underground13.40.18534.60.221699.50.1532147.50.1754
Free State surface319.40.0856319.40.0856
Grand total13.40.182354.00.097299.50.1532466.90.11110
  1. 1 Total attributable gold equivalent ounces are calculated assuming a US$1 400/oz Au, US$3.10/lb Cu and US$23.00/oz Ag with 100% recovery for all metals
  • NB Rounding of numbers may result in slight computational discrepancies
  • Note: 1 ton = 907 kg = 2 000 lbs
  •       1 troy ounce = 32.1507 grams
  • Au = gold
  • Ag = silver
  • Cu = copper
  • U308 = uranium
  • Mo = molybdenum
 

Mineral reserves statement

GOLD

Proved reservesProbable reservesTotal mineral reserves
  Tonnes
(Mt)
Grade
(g/t)
Gold 2
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Gold 2
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Gold 2
(000oz)
South Africa underground
                 
Free State                  
Gold                  
Bambanani1.910.33 6471.910.33 647
Joel2.45.26 4034.45.878226.75.66 1 225
Masimong4.94.48 7101.74.402376.64.46 947
Phakisa3.56.157014.07.689937.66.97 1 694
Target 15.04.216725.85.421 00810.74.86 1 680
Target 32.55.984714.25.046846.75.38 1 155
Tshepong20.55.573 6762.45.3341923.05.54 4 095
Unisel1.64.292230.74.02842.34.21 307
Total Free State underground42.45.517 50323.25.704 24765.55.5811 750
West Rand                  
Doornkop                  
Doornkop South Reef2.65.03 4205.05.59 8997.65.40 1 319
Kusasalethu9.46.80 2 05526.25.66 4 77835.65.96 6 833
Total West Rand12.06.42 2 47531.25.65 5 67743.25.86 8 152
Total South Africa underground54.45.71 9 97854.45.67 9 924108.85.69 19 902
South Africa surface
                 
Kraaipan Greenstone Belt                  
Kalgold7.00.90 20310.41.02 34117.50.97 544
Free State – surface                  
Free State (Phoenix)95.30.29 87395.30.29 873
Free State (St Helena)258.70.27 2 227258.70.27 2 227
Free State (Other):– WRD3.90.51653.90.51 65
– Slimes dams594.30.234 333594.30.23 4 333
– Subtotal598.20.234 398598.20.23 4 398
Total Free State354.00.273 100598.20.234 398952.20.247 498
Total South Africa surface (incl Kalgold)361.00.283 303608.70.244 739969.70.268 042
Total South Africa415.4  13 281 663.1   14 663 1 078.4   27 944
Papua New Guinea ¹
                 
Hidden Valley1.11.14 4025.41.751 43026.51.721 430
Hamata0.031.10 11.62.261171.62.24 118
Golpu225.00.866 194225.00.866 194
Total Papua New Guinea1.11.14 41252.10.967 741253.20.96 7 782
Grand total416.5  13 322 915.11 331.622 404 1 331.6   35 726
  1. 1 Total attributable gold equivalent ounces are calculated assuming a US$1 400/oz Au, US$3.10/lb Cu and US$23.00/oz Ag with 100% recovery for all metals
  2. 2 Metal figures are fully inclusive of all mining dilutions and gold losses, and are reported as mill delivered tonnes and head grades
    Metallurgical recovery factors have not been applied to the reserve figures
  • NB Rounding of numbers may result in slight computational discrepancies
  • Note: 1 ton = 907 kg = 2 000 lbs
  •       1 troy ounce = 32.1507 grams

GOLD EQUIVALENTS1

Proved reserves Probable reserves Total mineral reserves
  Tonnes
(Mt)
Au eq2
(000oz)
Tonnes
(Mt)
Au eq2
(000oz)
Tonnes
(Mt)
Au eq2
(000oz)
Silver
Hidden Valley 1.1 11 25.4 456 26.5 467
Total 1.1 11 25.4 456 26.5 467
Copper            
Golpu 225.0 13 265 225.0 13 265
Total 225.0 13 265 225.0 13 265
Total silver and copper as gold equivalents 1.1 11 250.4 13 720 251.5 13 731
Total Papua New Guinea including gold equivalents 1.1 52 252.1 21 461 253.2 21 513
Total Harmony including gold equivalents 416.5 13 333 915.1 36 124 1 331.6 49 457

OTHER METALS

Proved reserves Probable reserves Total mineral reserves
  Tonnes
(Mt)
Grade
(g/t)
Ag2
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Ag2
(000oz)
Tonnes
(Mt)
Grade
(g/t)
Ag2
(000oz)
Papua New Guinea1
         
Silver          
Hidden Valley 1.1 18.99 662 25.4 33.11 27 080 26.5 32.53 27 742
Golpu 225.0 1.36 9 864 225.0 1.36 9 864
Total 1.1 18.99 662 250.4 4.59 36 944 251.5 4.65 37 606
  Tonnes
(Mt)
Grade
(%)
Cu2
(Mlb)
Tonnes
(Mt)
Grade
(%)
Cu2
(Mlb)
Tonnes
(Mt)
Grade
(%)
Cu2
(Mlb)
Copper                  
Golpu 225.0 1.21 5 992 225.0 1.21 5 992
  Tonnes
(Mt)
Grade
(ppm)
Mo2
(Mlb)
Tonnes
(Mt)
Grade
(ppm)
Mo2
(Mlb)
Tonnes
(Mt)
Grade
(ppm)
Mo2
(Mlb)
Molybdenum                  
Golpu 225.0 81 40 225.0 81 40
  1. 1 Total attributable gold equivalent ounces are calculated assuming a US$1 400/oz Au, US$3.10/lb Cu and US$23.00/oz Ag with 100% recovery for all metals
  2. 2 Metal figures are fully inclusive of all mining dilutions and gold losses, and are reported as mill delivered tonnes and head grades
    Metallurgical recovery factors have not been applied to the reserve figures
  • NB Rounding of numbers may result in slight computational discrepancies
  • Note: 1 ton = 907 kg = 2 000 lbs
  •       1 troy ounce = 32.1507 grams
  • Au = gold
  • Ag = silver
  • Cu = copper
  • U308 = uranium
  • Mo = molybdenum
 

Important note

For printing purposes only, Harmony’s annual financial statements are presented in a seperate document, the Financial Report 2014. This document is also available in the download manager.