Gold Fields

Mineral
Reserves

2018

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Mineral Resources and Mineral Reserves Supplement

Introduction

Aim of this report

This report contains the Gold Fields Mineral Resource and Mineral Reserve statement as at December 2018. It provides key technical information to supplement the information summarised in the Integrated Annual Report (IAR) and it is available on the Company website at www.goldfields.com. In addition to providing transparent and compliant information in accordance with the South African Code for the Reporting of Exploration Results, Mineral Resources and Mineral Reserves (SAMREC Code), 2016 edition, this supplement highlights issues viewed as material to the reporting of Mineral Resources and Mineral Reserves per mining asset and growth project. Gold Fields’ commitment to materiality, transparency and competency in its public reporting remains of paramount importance and continues to be endorsed by the Group’s external audit and assurance protocol.

Headline numbers – Group overview
December 2018

This year’s Mineral Resource and Mineral Reserve position reflects the Company strategy in action, specifically the consistent funding of brownfield exploration, reinvestment in the sustainability and growth of the operations, embedded Business Improvement (BI) programmes and the advancement of quality projects. The robustness of the Mineral Resources and Mineral Reserves is testimony to the quality of the assets in the portfolio and is the result of a rigorous annual planning process that enforces a strong linkage between strategic, business and life-of-mine (LoM) planning that underpins alignment with Group objectives.

      MANAGED ATTRIBUTABLE
DECEMBER
2017
  Au Mineral Resources 123.1Moz 103.7Moz
  Cu Mineral Resources 53.1Moz 49.0Moz
  Au Mineral Reserves 767Mlb 764Mlb
  Cu Mineral Reserves 2.3Moz 2.2Moz
12-MONTH
DEPLETION
  Au production depletion from Mineral Resources 2.3Moz 2.2Moz
  Cu production depletion from Mineral Reserves 91Mlb 91Mlb
  Au production depletion from Mineral Reserves 2.1Moz 2.0Moz
  Cu production depletion from Mineral Reserves 88Mlb 88Mlb
DECEMBER
2018
  Au Mineral Resources 115.3Moz 96.6Moz
  Cu Mineral Resources 10,769Mlb 4,813Mlb
  Au Mineral Reserves 51.9Moz 48.1Moz
  Cu Mineral Reserves 695Mlb 691Mlb
Group total figures for 2018, inclusive of projects, but exclusive of Asanko JV, are net of depletion
The gold and copper prices used for the December 2018 Mineral Resources were US$1,400/oz and US$3.2/lb and for the Mineral Reserves, US$1,200/oz and for copper a sliding scale from short to long term of US$2.5/lb to US$2.8/lb were used
Measured and Indicated Mineral Resources are reported inclusive of those Mineral Resources modified to produce Mineral Reserves
GFI-managed Mineral Resource reconciliation   GFI-managed Mineral Resource reconciliation
GFI-managed Mineral Resource reconciliation   GFI-managed Mineral Resource reconciliation
     
GFI-managed Mineral Reserve reconciliation   GFI-managed Mineral Reserve reconciliation
GFI-managed Mineral Reserve reconciliation   GFI-managed Mineral Reserve reconciliation