Gold Fields Mineral Resources and Mineral Reserves Supplement to the Integrated Annual Report - 2020 - Mineral Resources and Mineral Reserves Statement

Oct 29, 2026

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Supplement to Gold Fields’ 2020 Integrated Annual Report presents the Mineral Resources and Mineral Reserves Statement as at December 2020. It provides technical information to complement the integrated annual reporting, in line with the SAMREC Code, while emphasizing materiality, transparency and competency in public disclosure. The document explains its overall purpose and reading structure, outlines strategic fit and key performance drivers, and summarizes developments affecting resource and reserve reporting by asset and region, supported by governance and audit assurance protocols.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages120

Reading Time5 h 2 min

AccessFree to download

Aim of this report

Group highlights

Headline Mineral Resources and Mineral Reserves Statement

Brownfield (on-lease) exploration

The annual mine planning cycle

Corporate governance

External auditor’s certificates of compliance

Americas Region

Regional overview

Cerro Corona mine

Salares Norte project

Australia Region

Regional overview

Agnew gold mine

Granny Smith gold mine

Gruyere JV gold mine

St Ives gold mine

Far Southeast Project

Supplementary Information

Regional and operational Competent Persons

Conversion table

Abbreviations

Glossary of terms

2020 MINERAL RESOURCES AND MINERAL RESERVES SUPPLEMENT TO THE INTEGRATED ANNUAL REPORT Delivering value for a sustainable future Gold Fields is a globally diversified gold producer with nine operating mines in Australia, Peru, South Africa and West Africa (including the Asanko joint venture (JV)) and one project in Chile. We have total attributable annual gold-equivalent production of 2 .24Moz (2 .46Moz managed production), attributable gold-equivalent Mineral Reserves of 52.1Moz and Mineral Resources of 116.0Moz. Our shares are listed on the Johannesburg Stock Exchange (JSE), with our American Depositary Shares trading on the New York Exchange (NYSE) . To be read in conjunction with the Gold Fields 2020 Integrated Annual Report (IAR) . For abbreviations refer to p114; and for glossary of terms refer to p116 of this Mineral Resources and Mineral Reserves Supplement An annexure to the Mineral Resources and Mineral Reserves Supplement is included on the Gold Fields website to provide additional information on the regional geology for each of Gold Fields’ four operating regions and summarises a brief history for each of the assets. This supplementary information should be referenced in conjunction with the Supplement itself and aims to streamline the effective review of the Company information provided. SEND US YOUR FEEDBACK To ensure that we report on issues that matter to our stakeholders please provide any feedback and questions to: investors@goldfields. com, [sustainability@goldfields.com](sustainability@goldfields.com) or visit [www.goldfields.com to download the feedback form](www.goldfields.com to download the feedback form). 1-17 18-37 38-75 76-87 88-109 110-117 INTRODUCTION AND GROUP OVERVIEW Aim of this report 1 Group highlights 3 Headline Mineral Resources and Mineral Reserves Statement 8 Brownfield (on-lease) exploration 11 The annual mine planning cycle 13 Corporate governance 15 External auditor’s certificates of compliance 17 AMERICAS REGION Regional overview 20 Cerro Corona mine 21 Salares Norte project 29 AUSTRALIA REGION Regional overview 40 Agnew gold mine 41 Granny Smith gold mine 50 Gruyere JV gold mine – 50% attributable to Gold Fields 58 St Ives gold mine 65 Far Southeast Project – 40% attributable to Gold Fields 74 SOUTH AFRICA REGION | South Deep gold mine | 77 | | --- | --- | | WEST AFRICA REGION | | | Regional overview | 89 | | Damang gold mine | 91 | | Tarkwa gold mine | 98 | | Asanko JV gold mine – 45% attributable to Gold Fields | 106 | | SUPPLEMENTARY INFORMATION | | Regional and operational Competent Persons 111 Conversion table 114 Abbreviations 114 Glossary of terms 116 The Gold Fields Mineral Resources and Mineral Reserves Supplement to the IAR 2020 INTRODUCTION INTRODUCTION Aim of this report This report contains Gold Fields’ Mineral Resources and Mineral Reserves Statement (the Supplement) as at December 2020. 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 information in accordance with the South African Code for the](on the Company website at www.goldfields.com. In addition to providing information in accordance with the South African Code for the)[ ](on the Company website at www.goldfields.com. In addition to providing information in accordance with the South African Code for the)Reporting of Exploration Results, Mineral Resources and Mineral Reserves, 2016 edition (SAMREC Code), this Supplement highlights key developments and issues viewed as material to the reporting of Mineral Resources and Mineral Reserves per asset. Gold Fields’commitment to materiality, transparency and competency in its public reporting remains of paramount importance, and continues tobe endorsed by the Group’s internal and external audit assurance protocols. This Supplement compri

FAQs

What does the Gold Fields 2020 supplement cover and when is it measured?

It contains Gold Fields’ Mineral Resources and Mineral Reserves Statement as at December 2020, providing technical information that supplements the Integrated Annual Report.

Which standards does the supplement follow for reporting?

The supplement provides information in accordance with the South African Code for the Reporting of Exploration Results, Mineral Resources and Mineral Reserves (SAMREC Code), 2016 edition.

How does the document connect mineral resources and reserves to Gold Fields’ strategy?

It describes how custodianship and management of mineral resources and reserves underpin strategic goals and performance targets, including seven strategic pillars integrated into resource and reserve group strategy and life-of-mine plans.

Oct 29, 2026

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