Slide 1: Obuasi Surface
OBUASI SURFACE MARCH 2025 NYSE │ JSE │GSE MINING TO EMPOWER PEOPLE AND ADVANCE SOCIETIES
Slide 2: Investor Note | Disclaimer
INVESTOR NOTE │ DISCLAIMER Certain statements contained in this document, other than statements of historical fact, including, without limitation, those concerning the economic outlook for the gold mining industry, expectations regarding gold prices, production, total cash costs, all-in sustaining c
Slide 3: Processing
PROCESSING
Slide 4: Processing | Process Flow
PROCESSING | PROCESS FLOW OBUASI SITE VISIT 2025 4
Slide 5: Processing | Improvements
PROCESSING | IMPROVEMENTS PROJECT IMPACT Installation, density and air supply optimization of first flash cell Improved flotation mass pull from 0.8% to 2.14% Installation and optimization of Vertimill (Regrind mill) Improved BIOX feed grind (5%) and sulphur oxidation (8%) ILR electrowinning cells r
Slide 6: Processing | Performance Trends (2020 – 2024)
PROCESSING | PERFORMANCE TRENDS (2020 – 2024) Milled Throughput • Phase 1 - 2000 tpd • Phase 2 - 4,000 tpd Flotation Mass Pull & Recovery • Improvement after installation of first flash cell BIOX Oxidation • Improved after commissioning of flash cell and VTM CIL Recovery Decreased with lower CIL fee
Slide 7: Processing | Future Plant Work (LOM Projects)
PROCESSING | FUTURE PLANT WORK (LOM PROJECTS) Improve Overall Plant Recovery • ILR Solid Tails Treatment • Flash flotation concentrate accounting (mass measurement and auto-sampling) Recovery Improvement • 2nd ILR installation (projected increase in gravity gold content of mill feed) • KC throughput
Slide 8: Environment
ENVIRONMENT Pompora TSF
Slide 9: Environment | Overview of TSFs
ENVIRONMENT | OVERVIEW OF TSFs Permits for Operations of Tailings and Water Infrastructure at Obuasi mine ► issued on May 6, 2021 The site has four tailings storage facilities Active Inactive TSF BIOX TSF Pompora Kokoteasua • Obuasi processing plant produces two separate tailings streams namely: • F
Slide 10: Environment | Tailings Management
ENVIRONMENT | TAILINGS MANAGEMENT South TSF - Active BIOX TSF - Active South Tailings Storage Facility (STSF) • Ring dyke impoundment located c.4km to northwest processing plant • Total land take - 215 hectares • Ongoing deposition for closure • Expected to be decommissioned 2030 BIOX TSF • Develope
Slide 11: Environment | Water Management
ENVIRONMENT | WATER MANAGEMENT Water management Obuasi Mine Water Treatment Plants for Operational and remains a key activity of Domestic use include the following; the Obuasi mine. • Four Wastewater Treatment Plants • South Process Plant (SPP) Wastewater Pre-Treatment Plant; • South Wastewater Trea
Slide 12: Environment | Reclamation
ENVIRONMENT | RECLAMATION Liability Estimates Movement (BP23) $M 200 191.55 189.70 2.40 3.90 0.30 0.00 0.65 150 100 50 Closure Plan Summary 0 Dec-22 Escalation Rehab Method Demolished Others Dec-23 • Operations Commenced - 2019 Changes • Life of Mine: 2052 (28 years) • Life of Asset: 2067 i.e. to re
Slide 13: Social
SOCIAL
Slide 14: Obuasi Socio-Political Landscape
SOCIAL | OBUASI SOCIO-POLITICAL LANDSCAPE Obuasi Mine Concession • 141 km² lease (previously 201 km²) • Five municipalities/districts • Ashanti King, 2 Paramountcy’s, 4 Divisional Stools • 62 host communities • 200,000+ population • AngloGold Ashanti Ghana the largest employer in the Ashanti region
Slide 15: Relinquished Assets
SOCIAL | RELINQUISHED ASSETS North and South Mine Infrastructure Legend • Obuasi mine initiated the footprint reduction strategy in 2016 □ North Mine footprint □ South Mine footprint □ South mine TSF Foorprint • Some mine assets became redundant which necessitated relinquishment to the Government, i
Slide 16: Challenges and Mitigation Measures
SOCIAL | CHALLENGES AND MITIGATION MEASURES No. Challenge Mitigation Measures Concession monitoring ASM Livelihood Programme 1 Encroachment by illegal miners Sensitization on negative impact of illegal mining Local employment Stakeholder engagement, including government agencies Capacity
Slide 17: 10-Year Socio-Economic Development Plan (SEDP)
SOCIAL | 10-YEAR SOCIO-ECONOMIC DEVELOPMENT PLAN (SEDP) Intensive engagement was undertaken with local and national stakeholders in developing a multi-year socio-economic development plan to improve long-term resilience of host communities through investment in infrastructure, education, healthcare
Slide 18: SEDP - Improved Social Development
SOCIAL | SEDP- IMPROVED SOCIAL DEVELOPMENT Medical Outreach Programmes Improved School Facilities Community Water Systems Health Facilities Roads Book Donations OBUASI SITE VISIT 2025 18
Slide 19: SEDP - Diversified and Sustained Local Economy
SOCIAL | SEDP- DIVERSIFIED AND SUSTAINED LOCAL ECONOMY Artist's rendering of future project Obuasi Business Park Business Exposure Tour Apprenticeship Training Sustainable Palm Oil Farming SME Training Maize Cultivation OBUASI SITE VISIT 2025 19
Slide 20: SEDP Provides Improved Cross Sector Partnership
SOCIAL | SEDP PROVIDES IMPROVED CROSS SECTOR PARTNERSHIP Partnership with Partnership with NGO Solidaridad for Absa Partnership for SME Development Otumfuo Foundation implementation of Climate Resilient Palm Oil c.$ 370,000 loan disbursed to 16 SME’s for Basic Education 90,000 palm seedlings distrib
Slide 21: Prioritising Improvement of Local Content
SOCIAL | PRIORITISING IMPROVEMENT OF LOCAL CONTENT Current employees as at Dec 2024 Local content spend 2018 – 2024 – Obuasi Total – 5,441 Employees Total spend - $2,274m 1% 12% 22% 43% 45% 77% Host Communities Nationals Expat Local Local Multinational Foreign OBUASI SITE VISIT 2025 21
Slide 22: Economic Benefits to Stakeholders
SOCIAL | ECONOMIC BENEFITS TO STAKEHOLDERS • Salaries and wages: $58.3m • Direct taxes (incl. royalties): $31.8m • Indirect taxes: $29.4m OBUASI SITE VISIT 2025 22
Slide 23: Obuasi Community Trust Fund
SOCIAL | OBUASI COMMUNITY TRUST FUND • Launched in 2012 to support long-term sustainable development of stakeholder communities • Obuasi mine contributes $2/oz produced into the Fund • Focus areas of Trust Fund include education, health, water and sanitation; affordable housing and livelihood empowe
Slide 24: AGA Health Foundation (AGAHF) Hospital
SOCIAL | AGA HEALTH FOUNDATION (AGAHF) HOSPITAL • With a bed capacity of 150, this is one of the largest referral Hospitals in the Ashanti Region; 395,000 patient visits annually (350,000 are outpatients) • Accounts for 60% of all outpatient visits in the Obuasi East District, with estimated populat
Slide 25: AGA Malaria Control Programme (AGAMal) - Established 2005
SOCIAL | AGA MALARIA CONTROL PROGRAMME (AGAMal) - ESTABLISHED 2005 This is a world-class example of a long-term public-private health partnership that has weathered all operational challenges to bring life- changing benefits to millions of people over the past two decades • AGAMal currently has a pa
Slide 26: AGA Schools and KNUST Obuasi University Campus
SOCIAL | AGA SCHOOLS AND KNUST OBUASI UNIVERSITY CAMPUS • AngloGold Ashanti Schools established 1961 • Donated renovated North Mine properties to Kwame Nkrumah University of Science & Technology for satellite campus in 2019 • Best-performing BECE* School in Ashanti Region since 2019 • 2,575 students
Slide 27: Artisanal Small Scale Mining Strategy
SOCIAL | ARTISANAL SMALL SCALE MINING STRATEGY • Proposed project to improve local livelihoods by transforming ASM in Obuasi into a sustainable sector in formerly relinquished parts of concession • Initial consultations with Minerals Commission and Solidaridad has established their alignment with th
Slide 28: Community Investment Spend
SOCIAL | COMMUNITY INVESTMENT SPEND OBUASI – TOTAL COMMUNITY INVESTMENT SPEND FROM 2019-2024 -- $11.4M OBUASI COMMUNITY INVESTMENT SPEND ($m) 3.50 3.00 2.88 2.91 2.50 2.30 2.00 1.55 1.50 1.14 1.00 0.61 0.50 - 2019 2020 2021 2022 2023 2024 OBUASI SITE VISIT 2025 28
Slide 29: Investor Relations Contacts
w w w. a n g l o g o l d a s h a n t i . c o m ANDREA MAXEY YATISH CHOWTHEE INVESTOR RELATIONS Telephone: +61 08 9435 4603 Telephone: +27 11 637 6273 General e-mail enquiries Mobile: +61 400 072 199 Mobile: +27 78 364 2080 amaxey@anglogoldashanti.com yrchowthee@anglogoldashanti.com Investors@anglogo