Iamgold Corporation · TSX:IMG

Iamgold — Technical Presentation (September 2017)

23 slides from Iamgold's technical presentation, Sep 6, 2017

  1. Slide 1: Saramacca NI 43-101 Maiden Mineral Resource Estimate

    Saramacca NI 43-101 Maiden Mineral Resource Estimate September 6, 2017 STEVE LETWIN, PRESIDENT & CHIEF EXECUTIVE OFFICER GORDON STOTHART, EVP & CHIEF OPERATING OFFICER CRAIG MACDOUGALL, SVP, EXPLORATION Empowering People, Extraordinary Performance l TSX: IMG l NYSE: IAG l

  2. Slide 2: Forward Looking Statement

    Forward Looking Statement This presentation contains forward-looking statements. All statements, other than of historical fact, that address activities, events or developments that the Company believes, expects or anticipates will or may occur in the future (including, without limitation, statements

  3. Slide 3: Qualified Persons & Technical Information

    Qualified Persons & Technical Information The mineral resource estimate, including verification of the data disclosed, has been completed by SRK Consulting (Canada) Inc (“SRK”) and reported in accordance with NI 43-101 requirements and CIM Estimation Best Practice Guidelines. The resource estimate w

  4. Slide 4: Steve Letwin: Transformation of Rosebel Continues

    Steve Letwin Transformation of Rosebel Continues

  5. Slide 5: Balanced Business Model

    Balanced Business Model Short-Cycle Capacity Long-Cycle Capacity ROSEBEL MINE CÔTÉ GOLD PROJECT • SARAMACCA • JOINT-VENTURE • MINE PLAN OPTIMIZATION ESSAKANE MINE BOTO, PITANGUI, • HEAP LEACHING SIRIBAYA • FALAGOUNTOU • WHOLLY-OWNED EXPLORATION PROJECTS WESTWOOD MINE • PRODUCTION EASTERN BOROSI, RAM

  6. Slide 6: Consolidating Prospective Land Packages Around Rosebel

    Consolidating Prospective Land Packages Around Rosebel 6

  7. Slide 7: Craig MacDougall: Saramacca's Mineral Resource Estimate and Exploration Highlights

    Craig MacDougall Saramacca’s Mineral Resource Estimate and Exploration Highlights

  8. Slide 8: 2016-2017 Drilling Highlights

    2016-2017 Drilling Highlights SMDD17-133 45.4m grading 2.38g/t Au SMDD17-084 The Delineation Drilling Program: SM DD 20.0m grading 4.26g/t Au • 2,000m x 400m area SM 1 DD 7 -10 17 8 S -11 M DD SMDD17-130 1 46.5m grading 3.07g/t Au SM 17 - SM DD 1 00 DD SM 17 -1 SMDD17-074 17 S -11 M D D 2 7 32.6m gr

  9. Slide 9: Deposit & Structural Setting

    Deposit & Structural Setting 9

  10. Slide 10: Saramacca Mineralization

    Saramacca Mineralization Fault Zone N • Gold mineralization associated with a major brittle-ductile vertical fault zone located at the contact between massive and pillowed Pillowed Basalt basalt units • Multiple mineralized structures with main fault and associated sub parallel shear zone within cor

  11. Slide 11: Typical Mineralized Sequence

    Typical Mineralized Sequence 5.45 g/t Au /15.0m 0.03 g/t 0.66 g/t 1.99 g/t 9.62g/t 8.70 g/t 3.86 g/t 3.86 g/t 5.08 g/t 4.67 g/t 0.13 g/t 0.07 g/t Sharp Contact Amygdular Basalt Unaltered Pillow Hydrothermal Breccia Cataclasis breccia Basalt Sharp Contact VG 103.0m 108.7m 124.7m 125.3m 126.6m 112.1m

  12. Slide 12: Resource Estimation Summary

    Resource Estimation Summary  Data base: 307 diamond & reverse circulation drill holes totaling 47,000 metres › IMG: 217 DD & RC holes totaling 37,700 metres (80% of total) › 32,250 assay intervals & 2,350 SG determinations  Modelling: Wire frames created for dominant lithologies, mineralized struc

  13. Slide 13: Mineral Resource Statement – Saramacca (as at August 28, 2017)

    Mineral Resource Statement – Saramacca (as at August 28, 2017) Cut-off Grade Tonnage Grade Contained Au Category Weathering Zone (g/t Au) (‘000 t) (g/t Au) (koz) Laterite 0.25 2,372 1.20 91 Indicated Saprolite 0.25 5,573 2.43 436 Transition 0.35 2,526 2.17 176 Fresh 0.45 3,973 2.49 318 Total Indicat

  14. Slide 14: Section 1700NW – Gold Grade Block Model vs Drill Intercepts

    Section 1700NW – Gold Grade Block Model vs Drill Intercepts Gold in Surface Laterite/Duricrust Saprolite Surface Fault Zone HW Shear Zones Cross Section 100m (looking northwest) OPEN down Plunge (u/g potential) 14

  15. Slide 15: Block Model with Interpolated Gold Grades

    Block Model with Interpolated Gold Grades Continuous Envelope of lower grade mineralization along Fault Zone with Higher Grade “Shoots” SE NW Open Fault Zone SMDD16-47 Higher grade shoots presenting exploration Longitudinal Section targets at depth VG (looking northeast) 100m 15

  16. Slide 16: Resources Constrained by Conceptual Pit

    Resources Constrained by Conceptual Pit Pit Optimization Parameters N • Pit slopes: 30 – 45° (sap to fresh) • Metal Recoveries (%): 97 (lat/sap), 76 (trans), 82 (fresh) • Mining: 95% mining recovery, 5% dilution Optimized Pit Shell 16

  17. Slide 17: Exploration Upside

    Exploration Upside Location Map (combined Lidar) Rosebel North Trend Rosebel South Trend ROSEBEL MINE Headley’s Reef Concession Saramacca Gold Trend Sarafina Concession 25km Gold deposits Gold Showings Saramacca Concession Saramacca Deposit

  18. Slide 18: Additional Exploration Targets

    Additional Exploration Targets MODD14-06 Tigri prospect from 103: 10.5m @ 1.32g/t Au MODD14-02 MODD14-07 From 53.25: 12m @ 2.89 g/t Au From 117: 4.5m @ 3.07 g/t Au 18

  19. Slide 19: Next Steps

    Next Steps 1. Increase confidence in resource; convert Inferred to Indicated 2. Expand existing resource along known mineralized trends 3. Evaluate additional exploration targets 4. Complete remainder of 2017 drill program totaling ~20,000 metres 19

  20. Slide 20: Gordon Stothart: Permitting & Development

    Gordon Stothart Permitting & Development

  21. Slide 21: Next Steps - Permitting

    Next Steps - Permitting Target Objective Date Establish operative UJV agreement - Accounting manual Step - Power plan agreement Q4’17 1 - Ore transport and mill configuration studies Complete Environmental and Social Impact Study (ESIA) - Social baseline studies Step - Environmental management plans

  22. Slide 22: Next Steps - Development

    Next Steps - Development Mine Development • Infrastructure planning underway: › Ore transport options / transportation corridors › Waste rock disposal and stockpiles › Site roads and infrastructure › Infrastructure capital requirements Metallurgical Testing • Refine recovery assumptions • Test crush

  23. Slide 23: Empowering People, Extraordinary Performance

    Ken Chernin Laura Young Shae Frosst VP, Investor Relations Director, Investor Relations Associate, Investor Relations T: 416-360-4743 T: 416-933-4952 T: 416-933-4738 Empowering People, Extraordinary Performance l TSX: IMG l NYSE: IAG l

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