Iamgold Corporation · TSX:IMG

Iamgold — Technical Presentation (October 2023)

81 slides from Iamgold's technical presentation, Oct 23, 2023

  1. Slide 1: Côté Gold: Site Tour

    Côté Gold: Site Tour October 23rd, 2023

  2. Slide 2: Land acknowledgement and welcome

    IAMGOLD’s Côté Gold offices in Sudbury are located within the Robinson Huron Treaty area on the traditional lands of Atikameksheng Anishnawbek and Wahnapitae First Nation. Our Côté Gold Project is located on Treaty 9 Territory, on the traditional lands of Mattagami First Nation and Flying Post First

  3. Slide 3: Cautionary Statement

    Cautionary Statement CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION All information included in this presentation, including any information as to the Company’s future financial or operating performance and other statements that express management’s expectations or estimates of future pe

  4. Slide 4: Technical Information and Qualified Persons

    Technical Information and Qualified Persons QUALIFIED PERSON AND TECHNICAL INFORMATION The technical and scientific information relating to exploration activities disclosed in this document was prepared under the supervision of and verified and reviewed by Craig MacDougall, P.Geo., Executive Vice Pr

  5. Slide 5: Côté Gold Tour Presentations

    Côté Gold Tour Presentations Evening Presentation Presentation at Site 1. Introduction 1. Growth & Exploration 2. Project & Site Overview 3. ESG 4. Operational Excellence 5. People 6. Financial Performance 7. Logistics for Tour Côté Gold | An IAMGOLD mine 5

  6. Slide 6: IAMGOLD & Côté Gold Teams

    IAMGOLD & Côté Gold Teams Renaud Adams • 30+ years of experience in global mining Eric Gosselin • 15+ years of experience in open-pit President & CEO experience in senior executive positions and Mine Manager mining, including leadership in a large-scale mine (since 2023) mining operations located in

  7. Slide 7: Project & Site Overview

    Project & Site Overview Côté Gold | An IAMGOLD mine 7

  8. Slide 8: Executive Summary

    Executive Summary 1 • Ownership: 92.5% JV (60:40 IAG/SMM ); 7.5% 3rd party • Location: Located 125 km southwest of Timmins, 175 km North of Sudbury • Acquisition: April 2012 for enterprise value (net of cash) of $505M with total resources of 0.9 Moz Indicated and 5.9 Moz Inferred2 • Construction sta

  9. Slide 9: Côté Gold: Large-Scale and Long-Life Mine

    Côté Gold: Large-Scale and Long-Life Mine Top 10 Gold Mines in Canada by Production1 (koz) 20 20 18 5 10 22 7 10 6 10 9 690 Remaining life of mine (years)2 585 Mines acquired in last 10 years 3 495 420 365 339 300 286 280 272 240 Detour Lake Malartic Côté Gold Meadowbank Meliadine Blackwater Porcupi

  10. Slide 10: Site Layout

    Site Layout I A B H C B A – Côté Pit D B – Stockpiles C – Primary & Secondary Crushing E D – Coarse Ore Dome E – Processing Plant F – Offices and Main Control Rooms G – Tailings Management Facility F H – Truck Shop G I – Camp Accommodations Côté Gold | An IAMGOLD mine 10

  11. Slide 11: Q3 2023 Progress Report

    Q3 2023 Progress Report Project Completion: 90.6% | Construction Completion: 92.0% OVERALL PROJECT PROGRESS 5% 100% Health and safety: Total project hours of 13.2 million hours with a project TRIFR of 0.68. 4% 80% Monthly progress Labour and workforce: 1,800 – 1,900 workers on site in Q3. Cumulative

  12. Slide 12: Upcoming Milestones

    Upcoming Milestones 2022 2023 2024 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 TMF Phase I Q2/23 ✓ Earthworks TMF Phase II Q4/23 Overburden Removal ✓Q3/23 AHS Control Room ✓Q4/22 Mining IAG Fleet to Support Earthworks ✓ Q2/23 Ore Stockpile Build-Up Q4/23 HPGR Foundation ✓ Q4/22 Primary Crusher Construction Q4/

  13. Slide 13: Site Layout – Tour Points of Interest

    Site Layout – Tour Points of Interest Côté Gold Tour Points of Interest 1. Camp 2. Offices & AHS Control Room 2 1 6 3. Open Pit Lookout 4. TMF (Tailings Management Facility) 4 5 5. Processing Plant 3 6. Core shack A virtual 360° tour of the Côté site is accessible here Côté Gold | An IAMGOLD mine 13

  14. Slide 14: ESG

    ESG Côté Gold | An IAMGOLD mine 14

  15. Slide 15: Health & Safety Overview

    Health & Safety Overview Low Total Recordable Injury Rate (TRIR) over the course of the project Comparing our TRIR against other mines in the Timmins Camp Côté Gold | An IAMGOLD mine 15

  16. Slide 16: Côté Gold in the Communities and Indigenous Engagement

    Côté Gold in the Communities and Indigenous Engagement Côté Gold is located on the traditional land of Côté in the Community Mattagami First Nation Flying Post First Nation Métis Nation of Ontario Community Sponsorships Donations Investments Côté Gold's Community Benefit schemes support sustainable

  17. Slide 17: Operational Excellence

    Operational Excellence Côté Gold | An IAMGOLD mine 17

  18. Slide 18: Autonomous Haulage

    Autonomous Haulage 2023 KEY HIGHLIGHTS • January 22nd - Go-Live safely achieved • February - Expanded Caterpillar Run Team support • July 4th - Commenced 24-hr operations • September 9th - Daily production record at 91,013 tonnes • September 30th - Over 7.8 MT hauled safely by AHT YTD • October – 10

  19. Slide 19: Autonomous Drilling

    Autonomous Drilling KEY HIGHLIGHTS • May 1st – Go-Live Autonomous drilling • June 1st – Commenced 24-hr drilling • July 23rd – Single Pit Vipers Daily record @ 572m drilled • October 7th – Fleet Pit Vipers Daily record @ 1,539m drilled • September 30th - Over 78 KM drilled safely since Go-Live • Oct

  20. Slide 20: Business Intelligence

    Business Intelligence KEY HIGHLIGHTS • In-house PBI development capabilities • Linked to Minestar, Surface Manager, Mobius, IMS, Blasting, Hexagon, Mine Planning • Real-time decision making • Daily coding and data sign-off process • Daily productivity performance reviews Côté Gold | An IAMGOLD mine

  21. Slide 21: Mine Production Highlights

    Mine Production Highlights PRODUCTION YTD (JAN 2023 TO SEP 2023) • Tonnes mined YTD of 14.2Mt • 7.8Mt from IAMGOLD • 6.4Mt from Contractors • Achieved production with 2 x 994s, 1 x 6015 and 10 x 793s • Meters drilled YTD of 145km • 67km with 4 x PV231 • 78km with 1x DM30, 2 x D65 • Stockpile balance

  22. Slide 22: 2022 EOY MRMR

    2022 EOY MRMR Côté Gold | An IAMGOLD mine 22

  23. Slide 23: Mine Design

    Mine Design View an animation of the Côté Gold mining sequence here Côté Gold | An IAMGOLD mine 23

  24. Slide 24: Production Schedule

    Production Schedule EX-PIT PRODUCTION (MT) GOLD PRODUCTION1 (KOZ) 80 600 70 558 500 528 518 497 506 60 465 452 400 Tonnes (Mt) 50 Ounces (k) 400 377 385 42 47 47 351 40 43 57 38 39 300 326 56 54 32 15 280 30 29 261 26 200 200 192 195 20 26 4 100 10 22 19 19 19 20 18 17 16 15 13 12 78 7 6 - 0 Y1 Y2 Y

  25. Slide 25: Reconciliation - YTD

    Reconciliation - YTD YTD 2023 Resource Model Reserve Model Grade Control Model Ore Polygons Ex-pit Production Ex-Pit Reconciliation Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces 3,179,977 1.01 103,336 2,991,925 1.01 97,381 3,270,249 1.07 112,275

  26. Slide 26: Reconciliation – De-Risk

    Reconciliation – De-Risk Note: Inside 2024 Mine Plan Côté Gold | An IAMGOLD mine 26

  27. Slide 27: Grade Control Best Practices

    Grade Control Best Practices Ore Stockpiles: Predictive Ressource: model is built Explicit on MineStar modelling data & Grabs Geology: Grab RC drilling: De- samples on risk & Grade piles Control Starting point Stockpile: Location of each loads is Throughout the Oz road Site assay Lab: PAL 1kg charge

  28. Slide 28: Grade Control & Segregation

    Grade Control & Segregation Blast 364-102 • Polygon layout Côté Gold | An IAMGOLD mine 28

  29. Slide 29: Grade Control & Segregation

    Grade Control & Segregation BH vs RC: • Côté Gold is moving from BH to RC to improve grade delineation. • Côté Gold Reserve is limited with TMF capacity. In that regard, every tonne of waste sent to the Mill is a tonne of ore lost at the end of the LOM. Waste segregation is as important as ore segre

  30. Slide 30: TMF Design

    TMF Design 203 Mt tailings (233 Mt design requires +5 m raise) Seepage control system with geomembrane liner for starter dams, collection ditches, and additional Tailings Design has evolved since Feasibility Study intercept wells under conservatism for provincial with further geotechnical investigat

  31. Slide 31: Starter Facility vs Ultimate Design

    Starter Facility vs Ultimate Design Starter Facility Capacity 11.01 Mt Pond Volume 1.5 Mm3 Max Dam Height​ ~28m East Dam, ~19m West Dam​ Pond Elevation​ 404.75 Crest Elevation​ East Dam: 409m / West Dam: 412m​ Spillway​ East Side​ • East starter dam (phase 1 and 2) & west starter dam • Saddle dykes

  32. Slide 32: Tailings Water Management

    Tailings Water Management Mill Start-up Water Inventory • Currently 0.95 Mm3 of water out of target 1.1- 1.5 Mm3 has been accumulated within TMF • Original target date was Nov. 1 and currently trending just below the 1.1 Mm3 line • Target range will be achieved before start-up • Current water balanc

  33. Slide 33: Processing Plant

    Processing Plant • Traditional primary/secondary crusher stages with HPGR in tertiary stage followed by two stages of grinding (Ball mill & Vertical mill) • Standard Leach/CIP with Zadra elution circuit • Anticipated 23% gold recovery by gravity (LOM) with total recovery of 91.8% • Following recent

  34. Slide 34: Primary and Secondary Crushing Circuits

    Primary and Secondary Crushing Circuits Lime Silo Screening Building Fire Water Systems Coarse Ore Dome Fine Ore Bin Secondary Crusher Primary Crusher HPGR Côté Gold | An IAMGOLD mine 34

  35. Slide 35: Plant Flowsheet

    Plant Flowsheet From Primary & Secondary Pre-leach Thickener O2 Storage & Distribution Process Water Tank Leach Tanks(10) Crushing Secondary Cyclones 30 hrs Ball Mill Cyclones Cyanide Destruction Tailings Thickener SO2 Ball Mill Tailings Pump Verti-Mills (2) CIP Tanks (8) Refinery ADR Cyanide Mixing

  36. Slide 36: Reagents & Grinding Media

    Reagents & Grinding Media • As of October 23rd, 2023, the status of mill reagents and first fills orders are as follows: Reagent Contract Selected First fill status / Comments Status Supplier Grinding Media (1” + Finalized Molycop Molycop working on LOI to provide 870t of media for the ball mill and

  37. Slide 37: Mill Operations – Start-up Narrative

    Mill Operations – Start-up Narrative • A flowsheet was created to assist with ore commissioning following POV and water commissioning. The first fill of reagents has been integrated as well. • A formal report has been produced as well to provide more details on the sequence to follow. • Criteria has

  38. Slide 38: Start-Up & Ramp-Up

    Start-Up & Ramp-Up 2022 2023 2024 2025 PROJECT TIMELINE Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Updated mill operating time and ramp-up targets Pre-commissioning Commissioning First Gold Commercial Production Target Throughput Mill Operational Readiness Ramp-up to Target Production Programming – i

  39. Slide 39: HPGR Operation and Maintenance

    HPGR Operation and Maintenance Selection • Over 350 HPGR units installed globally (92 by Weir) • Performance guarantee on capacity and on roll wear life Programming and Control • Weir Synertrex smart analytics platform purchased for real-time monitoring and remote troubleshooting by Weir experts Spa

  40. Slide 40: Pre-Commissioning & Commissioning

    Pre-Commissioning & Commissioning • We have an integrated commissioning team with international experience gained in similar projects. The team is comprised of IAMGOLD personnel and support from Reliable Controls Corp and Progesys. • Construction and commissioning are organized into a single organiz

  41. Slide 41: Mine Ops Readiness – Equipment Readiness

    Mine Ops Readiness – Equipment Readiness Type of equipment Operational / RTW in 2024 Ultimate Fleet Delivered CAT 793 AHS Truck​ 10/14​ 18 23 CAT D10 Dozer​ 4​/5 5​ 5​ CAT 994K​ 3​ 3 3​ CAT 6060FSE Shovel​ 2​ 2​ 2​ CAT 395F​ 2​ 2​ 2​ CAT 349F​ 1​ 1​ 1​ CAT 18M Grader​ 2​ 2​ 2​ CAT 988 Loader​ 0​ 1​

  42. Slide 42: Maintenance Strategy – Mill Front End

    Maintenance Strategy – Mill Front End Maintenance will be supported by OEMs and Contractors. Côté Gold | An IAMGOLD mine 42

  43. Slide 43: People

    People Côté Gold | An IAMGOLD mine 43

  44. Slide 44: Employment Impact

    Employment Impact Current Construction (October 2023) Operations 1,900 On site 525 IAMGOLD operations team (average) (average daily) 250 Contractor operations workforce (estimated) 15% Indigenous workforce goal of 25% Indigenous workforce by the fifth year of Operations 32% local and regional workfo

  45. Slide 45: Operations Workforce: Ramp-Up and Training

    Operations Workforce: Ramp-Up and Training CURRENT HIGHLIGHTS • 400 roles have been filled to date, which is in line with the target for October of 413. Current "active" employees at site is 348. • Great progress with Mill Operations and Trade hires. • Employee Committee has been established to addr

  46. Slide 46: Financial Performance

    Financial Performance Côté Gold | An IAMGOLD mine 46

  47. Slide 47: Côté Gold: Review of 43-101 Costs

    Côté Gold: Review of 43-101 Costs 2024 unit costs expected to be elevated above average 43-101 cost estimate MINING COSTS PROCESSING COSTS • due to inflation experienced in the industry and fixed costs being absorbed by fewer Other Other Assay tonnes and ounces during commissioning and ramp up Blast

  48. Slide 48: Liquidity & Costs to Complete (Q2 2023)

    Liquidity & Costs to Complete (Q2 2023) as of June 30, 2023 BALANCE SHEET @ Q2 2023 INCURRED PROJECT CAPITAL SPEND3 600 Cash and equivalents of $747.7 million + total liquidity1 of $1.2 billion OVERALL PROJECT PROGRESS • $170.1 million of cash and equivalents held by Essakane, $91.3 million held by

  49. Slide 49: Côté Gold: Site Tour – Day 2

    Côté Gold: Site Tour – Day 2 October 24rd, 2023

  50. Slide 50: Growth

    Growth Côté Gold | An IAMGOLD mine 50

  51. Slide 51: Côté + Gosselin Deposits – Geological Setting

    Côté + Gosselin Deposits – Geological Setting Abitibi Belt: > 260 M Oz & Growing South Swayze Belt • 19+ Moz (& growing) • Historical - Numerous high-grade vein and shear zone hosted deposits Gold production within 175 km radius: • Timmins + KL + Matachewan 897,000 Oz (Guidance 2023) + Gosselin • 12

  52. Slide 52: Exploration Objectives

    Potential for Côté type (intrusion related, Exploration Objectives breccia) disseminated mineralization and H-G Shear veins Extensive Property package of 596 km² JEROME MINE COTE DEPOSIT Jack Rabbit GOSSELIN DEPOSIT Clam Lake Côté Gold | An IAMGOLD mine 52

  53. Slide 53: Discovery Timeline – Gosselin Zone

    Discovery Timeline – Gosselin Zone 2017 DDH Program 3 DDH (2,122 m) 2019 DDH Program 2021 DDH Program 2023 DDH Program GOS17-05: 345.0 m @ 0.68 g/t Au 18 DDHs (6,743 m) 41 DDHs (15,883 m) 21 DDH (16,495 m) (in progress) 2016 2017 2018 2019 2020 2021 2022 2016 Geology Mapping, 2018 DDH Program 2020 D

  54. Slide 54: Gosselin and Côté Resources in 2021

    Gosselin and Côté Resources in 2021 • Gosselin 2021 MRE block model – 66% of the contained resource ounces classified as indicated • Gosselin drilling completed only to half the depth of the Côté Resource (at MRE) Côté Gold | An IAMGOLD mine 54

  55. Slide 55: Gosselin 2021 Initial Resource Estimate

    Gosselin 2021 Initial Resource Estimate1 Tonnes Grade Contained Au Attributable Classification Contained Au (Mt) (g/t Au) (Moz) (Moz) Total Mineral Resources2 Indicated 124.5 0.84 3.35 2.17 Inferred 72.9 0.73 1.71 1.11 • Maiden Resource estimate completed by SLR Consulting (Canada) Limited as of Oct

  56. Slide 56: October 23, 2023 – Drilling Update

    October 23, 2023 – Drilling Update Strategic targeting of expansion potential of the Gosselin Deposit: • Deposit at depth (>380 m vertical) • Gap area between breccia bodies) • Along the deposit’s southern edge 21 diamond drill holes totaling 16,495 metres (Jan 20 to August 24, 2023) Drilling confir

  57. Slide 57: Longitudinal Section

    Longitudinal Section Gosselin Zone Côté Resource Pit Gosselin Resource Pit Hydrothermal Breccia Priority Exploration (HdBx) Target for Hydrothermal Breccia GOS23-136 240.0 m grading 1.53 g/t Au GOS23-139 Incl. 120.0 m grading 2.26 g/t Au Côté 406.0 m grading 0.72 g/t Au Hydrothermal GOS23-144 500.8

  58. Slide 58: Gosselin 2023 DDH – Assay Results Highlights

    Gosselin 2023 DDH – Assay Results Highlights Table 1 Gosselin Project Drilling Results - 2023 Drilling program Core (2) (3) Hole No. UTM NAD83 Zone17 AZ DIP EOH From To (1) Au Interval Easting Northing Elevation (°) (°) (m) (m) (m) (m) (g/t) GOS23-131 431186 5267520 382 333 -62 795.00 152.00 624.00

  59. Slide 59: West Breccia Body

    West Breccia Body GOS22-122 GOS23-134 Hydrothermal Breccia – 757 m GOS22-122 262.0 m grading 0.77 g/t Au 224.5 m grading 0.64 g/t Au 166.3 m grading 0.82 g/t Au Côté Gold | An IAMGOLD mine 59

  60. Slide 60: East Breccia

    East Breccia GOS23-136 Hydrothermal Breccia – 450 m Côté Gold | An IAMGOLD mine 60

  61. Slide 61: Longitudinal Section – Côté to Gosselin

    Longitudinal Section – Côté to Gosselin Côté Deposit Gosselin Deposit Gosselin Resource Côté Resource Pit Pit MRE – Oct 18, 2021 # of DDH * Length (m) 163 54,775 Targeted area of resource expansion New Drill holes not in MRE # of DDH Length (m) # of DDH ** Length (m) 812 330,505 57 34,790 Côté Gold

  62. Slide 62: 2023 – New Structural Corridor Theory

    2023 – New Structural Corridor Theory New Theory Jack Rabbit / Gomak Gosselin • Possibility that the main NE trending structure through the Côté Chester intrusive complex is the main mineralization trend. Straighter than originally Old thought. • E-W trending structures crossing the NE structure pro

  63. Slide 63: Clam Lake – 2023 Exploration

    Clam Lake – 2023 Exploration • Geological mapping identified hydrothermal breccia outcrops with anomalous Au Gosselin • Drilling had encouraging intersections of Silica-Albite Alteration similar to that found in the Côté Deposit Continue to search for a new discovery • Silica – Albite Alteration, Cô

  64. Slide 64: Jack Rabbit 2023 Exploration

    Jack Rabbit 2023 Exploration JACK RABBIT Zone 2 Zone 1 Zone 3 Gosselin Deposit Gomak • Jack Rabbit & Gomak are situated in the northeast extent of the Au structural corridor within 2 km of the Gosselin Zone • Historical resources (1) in JR Zones 1 & 3 previously indicated an exploration potential of

  65. Slide 65: Côté District Pipeline

    Côté District Pipeline Côté Deposit Mine Construction Pre + Feasibility Study 3.35 M oz Au Indicated Scoping 1.71 M oz Au Inferred Gosselin Initial Resource Discovery Clam Lake Short Term Discovery Potential Monella Point Jack Rabbit Schist Lake North Shore Targeting SW Cipway Gomak North JR N + S S

  66. Slide 66: Questions?

    Questions? Côté Gold | An IAMGOLD mine 66

  67. Slide 67: Appendix

    Appendix Côté Gold | An IAMGOLD mine 67

  68. Slide 68: Côté Aerial View (Sep 2023)

    Côté Aerial View (Sep 2023) Côté Gold | An IAMGOLD mine 6868

  69. Slide 69: onoser

    2 onoser 5200700 N 266680 N 61364115 CétéGold ae CotéGold at

  70. Slide 70: Stockpile Model

    Stockpile Model Côté Gold | An IAMGOLD mine 70

  71. Slide 71: Stockpile Model – Autonomous Data Tracking

    Stockpile Model – Autonomous Data Tracking Côté Gold | An IAMGOLD mine 71

  72. Slide 72: Autonomous Drilling

    Autonomous Drilling Côté Gold | An IAMGOLD mine 72

  73. Slide 73: Reconciliation

    Reconciliation Phase 1 by Bench by Orebin Waste <0.35 g/t LG 0.35 g/t HG 0.7 g/t DFHG 1.5 g/t Grand Total Cut Bench Tonnes AUDIL Tonnes AUDIL Tonnes AUDIL Tonnes AUDIL Tonnes AUDIL Phase 1 388 20,673.32 0.00 20,673.32 0.00 Phase 1 376 713,575.90 0.04 195,736.99 0.51 83,473.66 0.95 6,632.33 2.24 999,

  74. Slide 74: Pit Phasing

    Pit Phasing EOY 2024 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 Côté Gold | An IAMGOLD mine 74

  75. Slide 75: Pit Phasing

    Pit Phasing EOY 2025 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 Côté Gold | An IAMGOLD mine 75

  76. Slide 76: Pit Phasing

    Pit Phasing EOY 2026 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 Côté Gold | An IAMGOLD mine 76

  77. Slide 77: Water Management Strategy

    Water Management Strategy Overall Site Water Balance • Water balance has been fully updated by IAMGOLD to better represent current site conditions • Dashboard has been developed to allow non-technical users to run simulations with various inputs • Water balance will be calibrated by measuring pond v

  78. Slide 78: Water Management Strategy Cont’d

    Water Management Strategy Cont’d • Water Treatment • Treatment of effluent from the mine site Hazard Groundwater Quality at Monitoring Level Rationale Incremental Operational Actions Roles and Responsibilities is currently not anticipated; however, Level Monitoring Points Near TMF Frequency water qu

  79. Slide 79: Dams & Water Realignment

    Dams & Water Realignment View our water realignment channel update video here Côté Gold | An IAMGOLD mine 79

  80. Slide 80: Mineral Reserves & Mineral Resources

    Mineral Reserves & Mineral Resources1,2,3 Tonnes Grade Contained Attributable Contained As of December 31, 2022 (millions) (g/t Au) (Moz Au) (Moz Au) Côté Gold Deposit P&P Reserves 233.3 1.0 7.17 4.65 M&I Resources3 365.9 0.9 10.21 6.61 Inferred 189.1 0.6 3.81 2.47 Gosselin Deposit Indicated 124.5 0

  81. Slide 81: Thank you

    Thank you Graeme Jennings, VP, Investor Relations 416-388-6883 TSX: IMG l NYSE: IAG l www.iamgold.com

IAMGOLD — Technical Presentation (October 2023) on 6ix