Novagold Resources Inc. · AMEX:NG
Novagold Resources — Hatch Autoclave Operators' Workshop 2026
30 slides from Novagold Resources's conference presentation, Aug 14, 2026
Slide 1: Donlin Gold Project, Alaska, USA, Update 2026 Hatch Autoclave Operators' Workshop
DONLIN GOLD PROJECT, ALASKA, USA, UPDATE 2026 HATCH AUTOCLAVE OPERATORS’ WORKSHOP A u g u s t 1 1 - 1 4 , 2 0 2 6 , C a l g a r y , A l b e r t a , C a n a d a TSX, NYSE AMERICAN: NG | NOVAGOLD.COM
Slide 2: Cautionary Statements
Cautionary Statements Cautionary Statements Cautionary Note Regarding Forward-Looking Statements This communication includes certain “forward-looking information” and “forward-looking statements” (collectively “forward-looking statements”) within the meaning of applicable securities legislation, inc
Slide 3: Donlin Gold LLC Ownership Summary
Cautionary Statements Summary ▪ Formed in 2007 50:50 partnership between NOVAGOLD and Barrick Mining Corporation (Barrick) ▪ Recent Transactions In 2025, 60:40 ownership with joint operational management between NOVAGOLD and Paulson Advisers LLC and its affiliates (Paulson) ▪ Acquisition by NOVAGOLD
Slide 4: Donlin Gold is a leading U.S. gold developer
Donlin Gold is a leading U.S. gold developer. Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop 4 Donlin
Slide 5: NOVAGOLD Enters into Definitive Agreements to Acquire 100% of Donlin Gold
5 NOVAGOLD Enters into Definitive Agreements to Acquire 100% of Donlin Gold See Mineral Reserves & Mineral Resources tables in Appendix ▪ PRODUCTION PROFILE 0.4 Moz/yr 1 Select North and South American gold development projects Driving responsible growth and value for decades to come Annual Producti
Slide 6: Permitting Stability & Alaska Readiness
Permitting Stability & Alaska Readiness De-Risked Path to Production in an Excellent Jurisdiction State Permitting Completed Federal Permitting Completed ✓ Air Quality ✓ Alaska Pollutant Discharge Elimination System1 ✓ Clean Water Act Section 401 Certification2 ✓ Reclamation Plan3 ✓ Title 16 Fishing
Slide 7: Long-standing Engagement with Alaska Native Corporations
▪ Calista selected the land — Alaska Native Claims Settlement Act of 1971 ▪ Employment opportunities and economic benefits ▪ Exploration and mining lease ▪ Hiring preference: shareholders, spouses and descendants ▪ Bidder’s preference ▪ Contributions to scholarship program Located on private lands d
Slide 8: Donlin Gold's Path To Production: Funding Strategy & Milestones
▪ Anticipated closing of Donlin Gold all-share transaction ▪ Evaluate potential financing sources ▪ Recruiting for key roles ▪ BFS o Advance engineering and technical workstreams o Schedule and budget ▪ Advance engineering and technical workstreams ▪ Maintaining/supporting permits and engaging with
Slide 9: Bankable Feasibility Study Scope of Work and Key Components
Natural Gas Pipeline BFS Scope of Work and Key Components Technical Workstreams ▪ Appointed Fluor Corporation as lead engineering firm; technical workstreams underway ▪ Awarded engineering contracts to WSP (Power Plant), Worley (Pipeline) and Hatch (POX & Oxygen Plant) ▪ Workstreams in progress for
Slide 10: Donlin Gold is Simply Unique
High-Grade at Scale 40 Moz gold contained in measured and indicated mineral resources2 at 2.22 g/t gold3 Production Profile Slated to produce 1.1 Moz per year over 27-year mine life - 1.3 Moz per year in the first full ten years1 Donlin Gold is Simply Unique – A Long-Life, Federally Permitted U.S. A
Slide 11: Donlin Gold Ore Characteristics
11 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Gold Deportment ▪ The primary host mineral of gold is arsenopyrite. ▪ Pyrite is the second most important gold carrier. ▪ Free gold is a rare occurrence within the deposit. The ore is primarily quartz and muscovite
Slide 12: Donlin Recent Metallurgical Testing
12 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Recent Metallurgical Testing 2018 Metallurgical Testing at AuTec on 2017 drilling ▪ Flotation testing on 1st 5 Years of ACMA Pit ores and 1st 10 years of Lewis Pit ores to investigate opportunities to reduce costs a
Slide 13: Donlin MCF1 Grinding and Flotation Pilot Plant
13 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop MCF1 Grinding and Flotation Pilot Plant Roughers (Left), Scavengers (Mid), Cleaners (Right) 2024 & 2025 SGS Pilot Plants
Slide 14: Donlin Continuous Pressure Oxidation Pilot Plant (CPOX)
14 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Continuous Pressure Oxidation Pilot Plant (CPOX) SGS CPOX Pilot Autoclave 2024 & 2025 SGS Pilot Plants
Slide 15: Donlin Process Description – Flowsheet
15 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Process Description – Flowsheet
Slide 16: Donlin Process Description – Potential Updated Flowsheet
16 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop Process Description – Potential Updated Flowsheet
Slide 17: Donlin METSIM Model – A Process Simulation Model
17 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop METSIM Model – A Process Simulation Model ▪ 2011 FSU2 heat and mass balance model ▪ 2015 Advanced Water Treatment studies ▪ 2018 Advanced Scoping Study heat and mass balance ▪ 2021 Process Variations Assessment stud
Slide 18: Pressure Oxidation Facility
Pressure Oxidation Facility 18 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop
Slide 19: POX Circuit Risks 225°C and 240°C
▪ Another project designed for 235°C, operated at 215°C early in operations ▪ Shell temperature risk controlled with 4 courses / thicker brick ▪ HPCW design to consider lower temperature range (225°C) ▪ Pressure control / level control sizing to be discussed with Valve vendor. Single stage letdown t
Slide 20: POX Circuit Risks 225°C and 240°C
▪ Review of the autoclave feed and discharge piping and valve sizing confirmed: – The FSU2 single 10” feed line will reduce to 2 x 8” feed lines in the duty / duty feed pump arrangement (additional feed line) – The FSU2 dual 10” discharge lines for each autoclave are suitable for the 225°C and 240°C
Slide 21: Autoclave Temperature / Pressure Conditions
▪ 35% overpressure limit increases with increasing temperature / steam pressure reducing the risk of low temperature excursions during start-up or operations ▪ Current best practice controls to be introduced to manage risks associated with shutdown / start-up / trapped oxygen 1810 2222 2453 2700 296
Slide 22: Autoclave Size
▪ Autoclave Vessel (Qty.2) – Single Construction – 5.01 m Diam. ID Steel – 30.5 m Tan to Tan – 33 m Length ID Steel Autoclave Size 22 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop
Slide 23: Autoclave Summary
5.72 m 35.8m 7.41 m 3.7m Autoclave Summary 23 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop ▪ Shell & Nozzles ▪ Lead Lining & Weld Overlay ▪ Saddles (3x) ▪ Shipping Covers + Hardware ▪ For each of these items the weight would exclude service nozzle covers, refract
Slide 24: Appendix
Appendix 24 Donlin Gold Project, Alaska, USA Update: 2026 Hatch Autoclave Operators’ Workshop
Slide 25: Appendix Mineral Reserves
See endnotes for this slide in Appendix Appendix Mineral Reserves 25 a) These Mineral Reserve estimates have been prepared in accordance with NI 43-101, 2014 CIM Definition Standards, 2019 CIM MRMR Best Practice Guidelines, and S-K 1300. b) Rounding as required by reporting guidelines may result in
Slide 26: Appendix Mineral Resources
*Figures attributable to NOVAGOLD reflect its 60% Donlin Gold interest. Pro forma figures are presented on a 100% Donlin Gold basis. Donlin Gold approximate cut-off grades (see Mineral Reserves and Resources Endnotes): Reserves1 : 0.75 g/t gold Resources2 : NSR $26.86/t t = metric tonne g/t = grams/
Slide 27: Cautionary Statements: Slide Endnotes
Cautionary Statements SLIDE 5 – A Strategic Asset: Donlin Positioned to be America’s Largest Gold Mine 1. Average of comparison group data of 13 projects based on large (3Moz proven and probable mineral reserves cut off), North/South American gold-focused development projects with >75% projected rev
Slide 28: Cautionary Statements: Mineral Reserves and Mineral Resources
Cautionary Statements SLIDES 25 & 26 Mineral Reserves and Mineral Resources 1. Mineral Reserves are reported on a 100% ownership basis and a 60% ownership basis. The 60% basis is attributable to NOVAGOLD through their 60% ownership interest in the joint venture that owns the mineral rights and manag
Slide 29: Technical Reports and Qualified Persons
Technical Reports and Qualified Persons The documents referenced below provide supporting technical information for the Donlin Gold project. Paul Chilson, P.E., who is the Manager, Mine Engineering for NOVAGOLD and a “qualified person” under NI 43-101 and S-K 1300, has approved the scientificand tec
Slide 30: NOVAGOLD RESOURCES INC. Contact
NOVAGOLD RESOURCES INC. Suite 1860 – 400 Burrard Street Vancouver BC Canada V6C 3A6 T: 604 669 6227 TF: 1 866 669 6227 F: 604 669 6272 E: info@novagold.com Mélanie Hennessey VP, Corporate Communications melanie.hennessey@novagold.com Frank Gagnon Manager, Investor Relations frank.gagnon@novagold.com
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