Slide 1: Hemlo Mine
TSX: HMMC OTCQX: HMMCF | HEMLOMINING.COM
Slide 2: Cautionary Note & Legal Disclaimer
Cautionary Note & Legal Disclaimer Cautionary Note This presentation is dated July 2026 and is a presentation with respect to Hemlo Mining Corp. (the “Company”, “Hemlo Mining”, or “HMMC”) and is subject to change. This presentation does not constitute an offer to sell or a solicitation of an offer t
Slide 3: Hemlo Mine Tour: Agenda
Hemlo Mine Tour: Agenda TSX: HMMC | OTCQX: HMMCF 3
Slide 4: Mine Tour: Team Overview
Hemlo Mine Tour: Team Overview Executive Team Hemlo Mine Team Jonathan Awde Jason Banducci Tonia Olford Vali Ghohestani Executive Chair VP, CD&IR HR & Community Relations Chief Metallurgist Jason Kosec Garett Macdonald Michael Casey Jonathan Wood President, CEO & Director VP, Operations & GM Health
Slide 5: Indigenous Partners & Land Acknowledgement
Indigenous Partners & Land Acknowledgement Hemlo Mining acknowledges that the lands on which its operations exist, lies within the traditional territories of the Biigtigong Nishnaabeg (“BN”), and Netmizaaggamig Nishnaabeg (“NN”). As the keepers of this land long before our time, we appreciate their
Slide 6: Mine Tour: Safety Guidelines
Hemlo Mine Tour: Safety Guidelines Personal Protective Equipment (“PPE“) Requirements: Underground Surface Safety Requirements: • Remain with your escort at all times • Adhere to posted signage • Report any unsafe conditions observed • Always wear your PPE • No walking and texting • Watch your footi
Slide 7: First Aid Locations
First Aid Locations • The primary First Aid station is in the Security Building at the main gate. • This building is staffed 24 hours a day by personnel who are trained in Advanced Medical First Responder (AMFR). • It is important that you advise your site contact or Guide of any injury so we can ad
Slide 8: HMC Fatal Risks
HMC Fatal Risks TSX: HMMC | OTCQX: HMMCF 8
Slide 9: Muster Stations
Muster Stations Surface • Primary Muster Station: Adjacent to the thickener • Secondary Muster Station: Core Shack Underground • Designated refuge stations • Refuge Chambers TSX: HMMC | OTCQX: HMMCF 9
Slide 10: U/G Emergency Procedures
U/G Emergency Procedures • Upon hearing an emergency call, all machinery/vehicles must be parked off the haulage road. • Personnel underground must make their way to the nearest refuge station. • If there is smoke, proceed to the nearest refuge station. • Stench Gas has a characteristic smell of rot
Slide 11: U/G Emergency Procedures
U/G Emergency Procedures Newtrax Cap Lamps Your cap lamp must always be on your hard hat when you are underground. Your lamp not only illuminates your way underground, but it is also a proximity detector. It notifies large equipment you are in their vicinity. When you get your lamp, keep the lock an
Slide 12: U/G Tag Board
U/G Tag Board • People going u/g have been assigned a Visitor Tag for the tag board. • Note: Tags must be visible and legible at all times on the tag board. • Immediately upon arrival back to surface you must go directly to the tag board and tag out. • You are solely responsible for placing and remo
Slide 13: Mine Tour: Presentation Contents
Hemlo Mine Tour: Presentation Contents 1. Hemlo Mine Overview 2. Mining Preview 3. Geology Day 1 4. Regional Exploration 5. Results & Outlook 6. Mineral Reserves & Resources 7. Mining Detail Day 2 8. Processing 9. Tailings Management Facility 10. Appendix 11. Section for Notes TSX: HMMC | OTCQX: HMM
Slide 14: 1. Hemlo Mine Overview
1. Hemlo Mine Overview
Slide 15: History
Hemlo Mine: History 1944 Mineralization is first identified by early prospectors across the Hemlo complex Golden Giant Williams David Bell 1981 Lac Minerals acquires the Williams assets from Lola Williams, triggering a legal dispute with 1987 the owner of David Bell, International Corona Resources (
Slide 16: A New Chapter
Hemlo Mine: A New Chapter 2025 H1 2026 Achievements 40+ year operating track record New Chapter: Royalty buyback on David Bell property Hemlo Mining Corp. ~25 million ounces of gold produced Hemlo acquired for ~US$1B: Initiated 130km drill program - US$542M equity raised - US$250 debt raised Tra
Slide 17: Long-Lived Asset with Upside
Hemlo Mine: Long-Lived Asset with Upside Regional Map ▪ ~25 Moz of gold production over 40-year history Greenstone Sugar Zone ONTARIO ▪ +1 Moz/yr production from 1985-2003 (Equinox) (Vault Minerals) History ~100km Marathon ▪ ~18 Moz produced at ~$350/oz avg. gold price, (Generation Mining) 7 Moz pro
Slide 18: Surface Layout
Hemlo Mine: Surface Layout NEWMONT TSF GOLDEN GIANT SED POND TAILINGS ROAD EAST DUMP PIT SURFACE SHOP AREA CRUSHER & GOLDEN SED POND CONVEYANCE GIANT SITE PUMPS LOOKOUT JH PORTAL LAYDOWN VENT WEST DUMP PARKING ADMIN / SHAFT MILL LOT PIT OUTLINE HIGHWAY ZONE HEMLO PIT CORE SHED MOOSE LAKE WATER SURFA
Slide 19: Underground Layout
Hemlo Mine: Underground Layout E Zone Past-Producing Mining Area C Zone Upper Past-Producing Mining Area (Golden Giant) (B Zone Main) Site Tour Visit Areas 1 1 9765 Alimak 2 8906 Diamond Drill 3 9087 Production Drilling 4 9037 Development 5 9135 Crusher 6 5 6 9240 Workshop 3 4 B Zone West B Lower We
Slide 20: Health & Safety
Hemlo Mine: Health & Safety High Potential Incidents (HPIs) Recordable Injuries HIGHLIGHTS 25 15 Lost Time • 3 years Lost Time Injury free Restricted Duty • Over 4.4 million hours LTI free 20 Medical Treatment • ISO 45001 certified since 2021 10 15 9 • Hemlo was the recipient of the 2025 John T. 23
Slide 21: Health & Safety
Hemlo Mine: Health & Safety 2026 FOCUS • Continuing to strengthen risk management culture through: • Visible Felt Leadership Program; • Unsafe Condition Reporting program; • Supervisor and Leadership development training; • Procedural reviews and update; • Crisis Management System implementation; •
Slide 22: Environment
Hemlo Mine: Environment Initiatives • ISO 14001 certified since 2010 • International Cyanide Management Code Signatory since 2009 • Implementation of Towards Sustainable Mining (TSM) • Conforms to the Global Standard for Tailings Management Compliance • 0 non-compliances in 2025 and 2026 YTD Water •
Slide 23: Environment
Hemlo Mine: Environment Permitting • Tailings dam raises permitted to 2030; permitting ongoing for raises beyond 2030 • Permitting for expansion of open pit • Consultation Committee established with First Nations Closure & Progressive Rehabilitation • Surety Bonds in place for C$92.3M (Williams and
Slide 24: Workforce
Hemlo Mine: Workforce Workforce Highlights Workforce Overview Workforce by Company At a Glance 600 529 529 45 75% 500 HMC Employee Apprentices/Students Local Workforce 400 17% 10% 2 Female Workforce Indigenous Workforce First Nation Partners 300 200 129 100 66 70 0 HMC Manroc Boart LSA • Approximate
Slide 25: Relationship with Local Communities
Hemlo Mine: Relationship with Local Communities Overview of Relationship 2026 Community Support • Foster strong relationships with schools, community organizations, and local groups Marathon • Provide annual bursaries and scholarships for local and Indigenous students ▪ Donated $13,331 HMC Matched f
Slide 26: Worker Accommodations
Hemlo Mine: Worker Accommodations Camp Arial View GMS Camps – First Nations Partnership • Camp is a joint venture between Biigtigong Nishnaabeg and Netmizaaggamig Nishnaabeg; • Located on Highway 17N approx. 35km west of Hemlo operations; • Housing for HMC employees and contractors; • Currently have
Slide 27: 2. Mining Preview
2. Mining Preview
Slide 28: Our Vision
Hemlo Mine: Our Vision Parameter 2025 Technical Report Hemlo Mining Business Case Underground Ore ~3,800 tpd (in line with current rates) Staged increase over 2-3 years to ~6,000 tpd Mining Rate Open Pit Production Start 2028 Optimal scope and timing to be evaluated Gold Price Assumption for $1,700/
Slide 29: New Owner Operator Model
Hemlo Mine: New Owner Operator Model • After several years with contractors operating the underground mine, Hemlo transitioned back to an owner operated model in Q1 2026 (Manroc and Boart are still present). • Process completed mid-March, two weeks ahead of schedule. • 97% of contractor employees tr
Slide 30: De-Bottlenecking Efforts
Hemlo Mine: De-Bottlenecking Efforts Numerous opportunities identified to increase productivity and lower operating costs across the mine site, many of which were previously employed at the Williams, Golden Giant and David Bell mines • Implementing a modern mine dispatch system to optimize manpower
Slide 31: 3. Geology
emlo 3. Geology
Slide 32: Regional & Local Geology
Hemlo Mine: Regional & Local Geology KEY OBSERVATIONS • Located on the eastern edge of the 2.7Ga Hemlo-Heron Bay Greenstone Belt in the Wawa subprovince; volcano-sedimentary sequence wedged between granitic intrusions • Gold mineralization is hosted within highly altered and metamorphosed volcanicla
Slide 33: Property Geology & Mineralization
Hemlo Mine: Property Geology & Mineralization • Hemlo comprises four zones — David Bell, Golden Giant, Williams, and Golden Sceptre — with only the Williams Mine still operating today • Williams hosts three zones: A-Zone (mined out), B- Zone, and C-Zone, with gold tied to pyrite, quartz- feldspar ho
Slide 34: New Genetic Interpretations
Hemlo Mine: New Genetic Interpretations • Recent independent study by Richard H. Sillitoe has verified the interpretation of the deposit as an Au-Mo "Climax Type" porphyry system • Amphibolite-grade metamorphism and extreme deformation have obscured common identifying features, hindering progress to
Slide 35: 4. Regional Exploration
4. Regional Exploration
Slide 36: Property & Regional Targeting Framework
Hemlo Mine: Property & Regional Targeting Framework HMC Regional Property & Exploration Upside • HMC controls a contiguous land package >45,000 ha surrounding the Hemlo Mine • Recent Barrick land consolidation & data compilation (past 3 years) has generated multiple high-quality regional targets • T
Slide 37: Regional Exploration Targets
Hemlo Mine: Regional Exploration Targets Long-term opportunity to transform the Hemlo Mine into a multi-kilometer district-scale system Beggs Lake ~44,500-hectare district-scale land package positioned along the Porphyry Lake • IRGS principal structural corridor of the world-class Hemlo Gold Camp •
Slide 38: Beggs Target - Rock Geochemistry Summary
Hemlo Mine: Beggs Target - Rock Geochemistry Summary • ~4,000 rock samples collected, with greater coverage in the eastern sector compared to the west Ultramafics • Gold distribution: • ~13% of samples (~557) return >1 ppm Au • ~1.5% (~62 samples) return >5 g/t Au • ~1% (~38 samples) return >10 g/t
Slide 39: Beggs Target - Au–Mo Spatial Association
Hemlo Mine: Beggs Target - Au–Mo Spatial Association • At Beggs, there is a strong spatial correlation between Au mineralization and elevated Mo concentrations, particularly along the margins of a granitic intrusion • This association is most prominent: • Along intrusive contacts with ultramafic and
Slide 40: Beggs Target - Au–K Spatial Association
Hemlo Mine: Beggs Target - Au–K Spatial Association • There is a moderate spatial correlation between Au mineralization and elevated K concentrations, particularly along the margins of a granitic intrusion • This relationship likely reflects potassic alteration (K-feldspar ± sericite) associated wit
Slide 41: 5. Results & Outlook
5. Results & Outlook
Slide 42: H1 2026: Operating Highlights
H1 2026: Operating Highlights Q2 2026 marked the beginning of a transition period at Hemlo as first quarter as owner-operator Operating Metrics Q1 2026 Q2 2026 YTD 2026 Q2 Operating Commentary Williams (100%) Unit • Safety: Continued its strong safety and environmental Ore processed 000t 230 283 513
Slide 43: Q1 2026: Financial Highlights
Q1 2026: Financial Highlights Q1 2026 demonstrated strong operating margins supported by strong gold price and balance sheet de-leveraging Revenue Net Income Earnings Per Share Cash Net Debt(1) $186.3 $22.1 $0.07 $123.6 $26.4 US$ million US$ million US$ per share US$ million US$ million Financial Co
Slide 44: Cost Outlook
Hemlo Mine: Cost Outlook Per unit mining and processing costs expected to reduce through the remainder of 2026 Q1 Financials Jan Feb Mar Q1 Tonnes Mined 115,883 106,481 101,431 323,795 Tonnes Milled 116,959 109,223 95,041 321,223 Commentary: Jan Feb Mar Q1 US$ US$ US$ US$ • Mining costs expected to
Slide 45: Current Operating Cost Breakdown
Hemlo Mine: Current Operating Cost Breakdown Total Operating Costs: low exposure to fuel and significant fixed cost component (labour) Total Cost Breakdown Mining Cost Breakdown 2% 2% Payroll 2% Payroll 3% 3% Manroc Manroc 4% Maintenance Parts 3% 4% 4% 5% 28% Maintenance Parts 5% 30% Other Contracto
Slide 46: Cost Worksheet
Hemlo Mine: Cost Worksheet 41,520,484 March Mining Costs * 3 months 8,748,380 March Processing Costs * 3 months 7,252,791 March G/A costs * 3 months 57,521,654 Costs Added 65,662,625 E Costs Transferred (Costs Added + Net movement @ 4,567 oz* Cash Inventory @ $1,783 0 2,065 (2,025) 27,858 Gold Produ
Slide 47: 6. Mineral Reserves & Resources
6. Mineral Reserves & Resources
Slide 48: Reserves, Resources & Potential
Hemlo Mine: Reserves, Resources & Potential Hemlo is one of the most productive gold deposits in Canada, producing +25 million ounces of gold over a 40+ year history LEGEND As-built 2026 Resources 2025 Reserves 15+ Linear Grade (High Prospectivity) TSX: HMMC | OTCQX: HMMCF 50
Slide 49: 2026 Mineral Resource Update: Highlights
2026 Mineral Resource Update: Highlights The MRE represents a key milestone toward a comprehensive MRMR update and Technical Report targeted for H2 2027 • M&I Mineral Resources (100% basis) of 96.9 Mt at 1.55 g/t Au for 4.8 Moz Au; increase of 1.2 Moz, or +34% vs. 2025 o Underground: 24.9 Mt at 3.53
Slide 50: Mineral Reserves: Effective December 31, 2024
Mineral Reserves: Effective December 31, 2024* Proven Reserves Probable Reserves Total Proven & Probable Reserves As of December 31, 2024 Tonnage Grade Contained Tonnage Grade Contained Tonnage Grade Contained (kt) (g/t Au) (koz Au) (kt) (g/t Au) (koz Au) (kt) (g/t Au) (koz Au) Open Pit Total - - -
Slide 51: Mineral Resources: Effective December 31, 2025
Mineral Resources: Effective December 31, 2025* Measured Resources Indicated Resources Measured & Indicated Resources Inferred Resources As of December 31, 2025 Tonnage Grade Contained Tonnage Grade Contained Tonnage Grade Contained Tonnage Grade Contained (kt) (g/t Au) (koz Au) (kt) (g/t Au) (koz A
Slide 52: 2026 Mineral Resource Update: Key Figures
2026 Mineral Resource Update: Key Figures 34% growth in M&I resources (+1.2 Mozs Au) from 2025 to 2026 (100% basis) Comparison of 2025 and Updated 2026 Mineral Resource Shapes 2026 M&I and Inf. Mineral Resources; 2026 Conversion Drilling Key Observations: Growth reflects impact of increased gold pri
Slide 53: 2026 Mineral Resource Update: Increased Continuity
2026 Mineral Resource Update: Increased Continuity 2026 MRE demonstrates increased continuity across the deposit Underground Reserves ($1,700/oz Gold Price) Resources Shapes ($2,500/oz Gold Price) (g/t) 4.37 3.72 3.53 3.03 3.03 2.58 Underground Resource M&I Sensitivity to Inferred 2,832 793 3,455 1,
Slide 54: 2026 Mineral Resource Update: Exploration
2026 Mineral Resource Update: Exploration 130,000 m drill program underway targeting growth, resource conversion, and high-definition drilling Hemlo Mine Longitudinal and Sections(2) Growth: 30,000 m Comparison of the 2025 and 2026 Resource Grade Shells; 2026 Growth Drilling • Targets areas near exi
Slide 55: Long History of Reserve Replacement
Hemlo Mine: Long History of Reserve Replacement Contained Gold Reserves Over Time (koz) and Hemlo Reserves Price vs. Spot Gold (US$/oz) 3,478 3,500 2,391 1,772 1,798 1,801 1,943 3,000 1,393 1,250 1,258 1,269 1,300 1,300 1,400 2,500 1,200 1,200 1,200 1,200 1,200 1,200 1,200 334 2,000 397 1,924 921 23
Slide 56: Reserves & Resources by Zone
Hemlo Mine: Reserves & Resources by Zone 2025 Resources 2026 Resources M&I Inferred M&I Inferred Zone (kt) (g/t Au) (koz Au) (kt) (g/t Au) (koz) Zone (kt) (g/t Au) (koz Au) (kt) (g/t Au) (koz) Open Pit 56,875 0.88 1,601 6,501 0.42 88 Open Pit 71,923 0.87 2,009 3,988 0.57 73 B Zone Lower East 849 4.5
Slide 57: Reconciliation
Hemlo Mine: Reconciliation F1: Reserve model vs Grade Control Model (GCBM) • Compliance to plan metric • -1% variance in tonnes, -6% to grade and ounces 2026 YTD Reserve Model F2: Mill Reported vs GCBM Mine Tonnes Grade (g/t) Ounces Reconciliation • Performance metric of the updated Block Model 451,
Slide 58: 7. Mining Detail
7. Mining Detail
Slide 59: Underground Summary
Hemlo Mine: Underground Summary Infrastructure Summary Hemlo Underground Life of Mine Mining Fronts Access ▪ Two ramps from surface that can be used for E Zone production haulage Past-Producing Mining Area C Zone Upper (Golden Giant) ▪ Shaft: 1,300 m deep Past-Producing Mining Area (B Zone Main) o 2
Slide 60: B Zone
Hemlo Mine: B Zone Commentary B Zone Schematic ▪ Currently mining B Zone Lower East and Lower West ▪ Key ore sources, representing ~40% of 2026 production Past-Producing Mining Area ▪ Largely developed zone with additional stopes introduced (B Zone Main) through reoptimizing at higher gold prices ▪
Slide 61: C Zone
Hemlo Mine: C Zone Commentary C Zone Schematic ▪ Provides consistent ore feed throughout the life of mine C Zone Upper ▪ Currently mining Upper C Zone o Where the majority of Hemlo’s Alimak stopes are mined o Manroc mining area; ~50% Alimak mining method ▪ Key ore sources, representing ~30% of 2026
Slide 62: E Zone
Hemlo Mine: E Zone Commentary E Zone Schematic ▪ Newly established zone – key upside area ▪ Recently expanded down plunge with further potential for expansion at depth ▪ Exploration and access drift in progress and ongoing drilling programs to define zone E Zone ▪ Multiple accesses and production fr
Slide 63: Golden Giant
Hemlo Mine: Golden Giant Commentary Golden Giant Schematic ▪ Past producing zone currently subject of a detailed re-opening Past-Producing Mining Area plan which includes geotechnical and geological assessments (Golden Giant) ▪ Estimated to contain some of the highest grade of remaining inventory ▪
Slide 64: Interlake
Hemlo Mine: Interlake Commentary Interlake Schematic ▪ Provides consistent ore feed throughout the life of mine ▪ Key ore source, representing ~30% of 2026 production ▪ Consists of multiple stacked parallel veins, with potential for large transverse stopes ▪ Capital development progressing towards L
Slide 65: Key Upside Opportunities
Hemlo Mine: Key Upside Opportunities 1 Mining Sequence 2 Maximize Portal Haulage ▪ Bottom-up vs top-down to allow for better C-Zone Lower ▪ New E-Zone presents a lot of E-Zone material handling potential ▪ Drilling down-holes vs up-holes to improve ▪ Multiple mining fronts available stope performanc
Slide 66: Trade-off Study Update
Hemlo Mine: Trade-off Study Update Commentary Upper C Zone Open Pit vs Underground Schematic (Facing North) ▪ Scoping level study completed by BBA ▪ Trade-off considers open pit mining vs bulk mining of stopes directly below open pit (in Upper C Zone) ▪ Potential for 4,000 tpd of near-surface ore th
Slide 67: Open Pit Overview
Hemlo Mine: Open Pit Overview Summary Sectional View Looking East-North-East ▪ Mining concluded in the open pit in Q3 2020, however the pit remains the Existing subject of ongoing study and contains 0.8 Moz of reserves Topography ▪ The open pit project aims to capitalize on installed milling infrast
Slide 68: Open Pit Infrastructure
Hemlo Mine: Open Pit Infrastructure Study Overview and Recommendations Site Plan with Potential Upgrades ▪ An initial assessment of the infrastructure required to re-open the open pit was completed in late 2024 3 PRIMARY CRUSHER ▪ The previous operation had an existing shop, currently used BUILDING
Slide 69: Open Pit Permitting
Hemlo Mine: Open Pit Permitting 2024 2025 2026 2027 2028 Baseline Studies Engineering & Permitting Hydrogeology Permit to Take Water Endangered Species Act Industrial Sewage ECA Closure Plan Amendment Forest Resource License Water Dam Approval Fisheries Act (Federal) TSX: HMMC | OTCQX: HMMCF 71
Slide 70: 8. Processing
8. Processing
Slide 71: Processing Overview
Hemlo Mine: Processing Overview Summary Processing Plant Interior ▪ The original Williams mill capacity was 3,000 dry tpd and was subsequently expanded to 6,000 dry tpd in 1988 o Over the next ten years, throughput gradually increased to 7,000 dry tpd o In 1999, the David Bell Mill was shut down, an
Slide 72: Mill Optimization Opportunities
Hemlo Mine: Mill Optimization Opportunities Mill currently running at ~40% capacity with immediate opportunity to increase production Hemlo Mine Mill ▪ Operating at 40% capacity (~3,800 tpd) ▪ Opportunity to increase production rate to ~6,000 tpd without major upgrades or costs Mill Capacity ▪ Namep
Slide 73: Processing Technical Parameters
Hemlo Mine: Processing Technical Parameters ▪ Processing Plant will require upgrades to accommodate the additional throughput and changes to the tailings’ deposition PROCESSING COST PER OUNCE 2024 2025 2026 strategy 600 Cost/Oz, USD o Expand sulphide flotation capacity to improve sulphide recovery a
Slide 74: Processing Flowsheet
Hemlo Mine: Processing Flowsheet ▪ Open Pit gyratory crusher has been placed in care & storage with spares available on-site (liners, mantles, etc) ▪ Conveyor belts for Open Pit crushers are present and would require replacement parts ▪ Each mill line can be operated in singularity o Detox and sulph
Slide 75: Mill Performance
Hemlo Mine: Mill Performance 2025 Technical Report life of mine average recoveries of ~93% (including open pit) Monthly Stats for Plant Recovery (%) 100 2024 2025 2026 Plant Recovery (%) 90 80 70 January February March April May June July August September October November December 2024 95.26 94.93 9
Slide 76: 9. Tailings Management Facility
9. Tailings Management Facility
Slide 77: Tailings – Operations
Hemlo Mine: Tailings – Operations Overview ▪ The Hemlo Tailings Management Facility (TMF) is comprised of two basins, referred to as the David Bell Pond and Williams Pond, and currently covers 431 hectares ▪ Williams Pond is used for active tailings deposition; David Bell is inactive and used for wa
Slide 78: Tailings – Life of Mine
Hemlo Mine: Tailings – Life of Mine Short-term (2026-2030) ▪ Rockfill dykes built within existing perimeter dams (Dyke 1, Dyke 2), with downstream channels and paddock berms ▪ Construction of Dyke 1 completed, Dyke 2 planned for end of 2027 ▪ Additional expansions/optimizations within existing facil
Slide 79: Tailings – Life of Mine
Hemlo Mine: Tailings – Life of Mine Medium-term (2030-2038) ▪ Centreline Raise Expansion will provide an additional ~28Mt of storage capacity, separated into 3 phase of construction ▪ Detailed Design of Phase 1 is in progress, set to be completed early 2027 for permit application ▪ Material preparat
Slide 80: Tailings – Expansion Timeline
Hemlo Mine: Tailings – Expansion Timeline Note: Mill throughput is 6,000 tpd between 2026-20231 and increases to 10,000 tpd in 2031 and beyond; costs from 2025 PFS, capacities as of July 2026 TSX: HMMC | OTCQX: HMMCF 82
Slide 81: 10. Appendix
10. Appendix
Slide 82: Ventilation
Hemlo Mine: Ventilation Overview Hemlo Ventilation Schematic ▪ Fresh air enters the mine through the Main Shaft and the David Bell Shaft and primarily exhausts through the Newmont Shaft, #5 Vent Raise and the A-Zone Portal. Main fans are as listed below: o #5 exhaust fan x 1 (148” 2000HP), Newmont e
Slide 83: Paste Backfill Infrastructure
Hemlo Mine: Paste Backfill Infrastructure Overview Hemlo Paste Line Layout ▪ Hemlo primarily uses paste backfill to fill open voids underground ▪ The paste backfill flows from the plant to underground via a surface borehole, then travels through a series of pipelines & boreholes to reach the void ▪
Slide 84: Equipment & Maintenance
Hemlo Mine: Equipment & Maintenance Equipment Summary – HMC only Main Improvements implemented and completed: 2025 Today EOY • 5562 Jumbo: currently offsite receiving a mini rebuild. Expected to be back on-site end Scoop 11yd 5 7 9 of August Scoop 8yd 1 3 3 45t Haul Truck 7 8 9 • 5365 11yd Scoop: Cu
Slide 85: Equipment & Maintenance
Hemlo Mine: Equipment & Maintenance TSX: HMMC | OTCQX: HMMCF 87
Slide 86: Comminution & Leaching and Refining
Hemlo Mine: Comminution & Leaching and Refining Comminution Leaching and Refining ▪ Underground ore and waste rock from the underground are crushed by jaw ▪ Thickener underflow is pumped to the cyanide leach circuit, consisting of nine crushers (located underground) and then hoisted separately to th
Slide 87: Processing Infrastructure
Hemlo Mine: Processing Infrastructure Processing Plant Summary ▪ 3.4 Mtpa capacity, twin grinding circuits o Each circuit has its own COB (Coarse Ore Bin) at 6,000 tonne capacity o SAG Mill – 22’ X 12’ Bolliden-Allis, 3,500 HP (Horsepower), Ball Mill – 16’ X 21’ Bolliden-Allis, 3,500 HP ▪ Knelson co
Slide 88: Power
Hemlo Mine: Power Power Overview Hemlo Substation and Transformers ▪ Site power is supplied by Ontario Hydro’s 115kv M2W line feeding two primary 25/33/41 MVA transformers located on our main Substation ▪ Power pricing of ~C$0.08/kWh inclusive of NEAP rebate ▪ Pricing subject to Global Adjustment da
Slide 89: Royalties
Hemlo Mine: Royalties Royalty Area (Cross Section) Royalty Area (Plan View) Royalties over Hemlo Properties Typ Site Royalty Royalty % Currency Comments Payable to e David Bell McKinnon NSR 1.50 C$ Covers all David Bell Production Triple Flag/McKinnon Variable based on gold produced (3% up to 50 koz
Slide 90: Notes to Mineral Reserves and Mineral Resources Tables
Notes to Mineral Reserves and Mineral Resources Tables: (a) notes to Mineral Reserves: ▪ The Hemlo Mineral Reserve estimate follows the CIM (2019) MRMR Best Practice Guidelines. ▪ These Mineral Reserves have been diluted based on site geotechnical recommendations and have had a mining recovery appli
Slide 91: 11. Section for Notes
11. Section for Notes
Slide 92: Notes
Notes 1 TSX: HMMC | OTCQX: HMMCF 94
Slide 93: Notes
Notes 2 TSX: HMMC | OTCQX: HMMCF 95
Slide 94: Notes
Notes 3 TSX: HMMC | OTCQX: HMMCF 96
Slide 95: Contact
Contact General Inquiries info@hemlomining.com Head Office 390 Bay Street, Suite 1720, Toronto, ON M5H 2Y2 Site Office ON-17, Marathon, ON P0T 2E0