Algoma Steel Group Inc. · NASDAQ:ASTL
Algoma Steel — Corporate Update (June 2025)
29 slides from Algoma Steel's corporate update, Jun 3, 2025
Slide 1: Community Liaison Committee Meeting #53
Community Liaison Committee Meeting #53 Tuesday June 3rd, 2025 1
Slide 2: Building Better Lives and a Greener Future
Building Better Lives and a Greener Future Safety • Teamwork • Integrity • Caring With every decision, every action, every day, we will work safely with teamwork, integrity and deep care for our people, their families and the environment.
Slide 3: Agenda
Agenda 1. Review of March 18th, 2024 Meeting Notes 2. Membership Items 3. Cokemaking Emissions Performance 4. Review 2024 Fourth Quarterly Report – Ambient Air Quality Monitoring Program 5. Electric Arc Steelmaking and Environmental Permit Applications 6. Legacy Environmental Action Plan 7. Communit
Slide 4: Membership
Membership Current Members and Alternates Representation Primary Member Alternate Algoma Steel Corey Jackson Giancarlo Perra MECP Lori Jalak Rick Lalonde Public David Trowbridge Anton Schoahs Public Jillian Marquis Dan Gabor SSM Tribe of Chippewa Indians Isaac McKechnie Robert Schulte Algoma Public
Slide 5: Cokemaking Emissions Performance
Cokemaking Emissions Performance Progressive Annual Reduction Key Performance Indicators related to Cokemaking Emissions: 30 Day Rolling Average % Implementation Charging Pushing Doors Lids Off-takes Date Emissions Opacity (%) average intensity of pushing emissions average duration of charging emiss
Slide 6: Cokemaking Emissions Performance
Cokemaking Emissions Performance 6
Slide 7: Cokemaking Emissions Performance
Cokemaking Emissions Performance 7
Slide 8: Cokemaking Stack Opacity
Cokemaking Stack Opacity Z Pr s iyi Bs y ing Average —8 Battery Rolling Average Apr 11 Restart ALGOMA
Slide 9: #7 Battery Update
#7 Battery Update As a significant milestone in our transition to Electric Arc Steelmaking, Battery #7 at our coke-making facility is being permanently shut down this week. #7 battery is our least efficient battery and we do not expect its shutdown to result in any increase to operating cost. 9
Slide 10: 2025 First Quarter Report – Ambient Air Quality Monitoring Program
2025 First Quarter Report – Ambient Air Quality Monitoring Program 10
Slide 11: 2025 First Quarter Report – Ambient Air Quality Monitoring Program
2025 First Quarter Report – Ambient Air Quality Monitoring Program 11
Slide 12: 2025 First Quarter Report – Ambient Air Quality Monitoring Program
2025 First Quarter Report – Ambient Air Quality Monitoring Program 12
Slide 13: Building a New Era in Steelmaking
Building a New Era in Steelmaking
Slide 14: EAF Transformation Project Updates
EAF Transformation Project Updates 14
Slide 15: EAF Transformation Project Updates
EAF Transformation Project Updates 15
Slide 16: EAF Transformation Project Updates
EAF Transformation Project Updates 16
Slide 17: EAF Transformation Project Updates
EAF Transformation Project Updates The Furnace Takes Its Place Inside the Engineered Furnace Enclosure Water Treatment Plant Commissioned Fume Treatment Plant Commissioned EAF Electrical Substation Tested and Energized 17
Slide 18: A Generational Investment Unlocking Significant Value
A Generational Investment Unlocking Significant Value Expected Benefits Adds ~700kt of finished steel capacity aligning steelmaking capacity to rolling capacity. ~70% fewer total CO2 emissions (annual reduction of 3 million tonnes of CO2). More flexible operations capable of responding dynamically t
Slide 19: EAF Local Economic Impact by the Numbers
EAF Local Economic Impact by the Numbers 51 500 $880M Local Suppliers Construction Project Commitments Engaged Jobs Created Project spend as of March 31, 2025 $824M $213M Community spend as of May 31, 2025 19
Slide 20: Algoma Steel's Shrinking Environmental Footprint: Long-Term Advantages of Electric Arc Steelmaking
Algoma Steel’s Shrinking Environmental Footprint: Long-Term Advantages of Electric Arc Steelmaking Reduction1 % Reduction CO2 3.0mm tonnes 70% GHG EMISSIONS CO2/NT 1.33 tonnes 75% PRODUCTION SOX EMISSIONS 4,060 tonnes 82% NOX EMISSIONS 1,604 tonnes 52% Complete elimination of Stack and STACK & FUGIT
Slide 21: Transition to Electric Arc Furnace Steelmaking: Environmental Compliance Approvals
Transition to Electric Arc Furnace Steelmaking: Environmental Compliance Approvals 1 Environmental Compliance Approval 1920-DDDQCS for air and noise was issued on April 17, 2025. Environmental Compliance Approval 2 5691-CJKG54 for industrial sewage was issued on February 29, 2024. These environmenta
Slide 22: EAF Air and Noise ECA Conditions
EAF Air and Noise ECA Conditions 1) EAF Source Testing 2) Noise Abatement Projects and Acoustic Audits 3) Updated Best Management Plan for Fugitive Dust 4) Continuation of Ambient Air Quality Monitoring 5) Development of a Public Engagement Plan 6) Adherence to the Abatement Plan 22
Slide 23: Alternate Standard Requests
Alternate Standard Requests New Standards will govern the operating transition to electric arc steelmaking Algoma steel has prepared an Abatement Plan, which has been accepted by the MECP, to bridge the gap until an alternate standard is available under O.Reg. 419. The Abatement Plan is now a part o
Slide 24: EAF Melt Shop Building Award of Excellence
We are proud to share that our EAF Melt Shop Building has received the Award of Excellence in the Institutional/Industrial Project category presented by the Canadian Institute of Steel Construction. 24
Slide 25: Shoreline Stabilization, Sawmill Bay Dredging, and Site Greening
Shoreline Stabilization, Sawmill Bay Dredging, and Site Greening Algoma’s shoreline stabilization project consists of a four year plan to install 4.1 km of shoreline protection along the St. Mary’s River to prevent future erosion. As of December 2024, the project is valued at $4.07 million. The proj
Slide 26: Update on the Collaborative Algoma University Phytoremediation Project
Update on the Collaborative Algoma Results University Phytoremediation Project Plant–microbe interactions in steel slag: can the slag microbiome drive growth outcomes? Study: Quincy grew lettuce (a test plant) in soil mixed with different amounts of slag — both with and without microbes — to see wha
Slide 27: Community Engagement
Community Engagement Algoma Steel is committed to being a good neighbor. Quarterly Community Liaison Committee meetings. We were proud to once again sponsor and judge the Rotaryfest Science Fair. Algoma Steel was honoured to serve as the keynote speaker for the Jane Goodall: Reasons for Hope Educati
Slide 28: Next Community Open House
Our next Community Open House will be held: Wednesday, June 11th, 2025 at Algoma Steel We hope to see you there! 28
Slide 29: Community Liaison Committee – Next Meetings
Community Liaison Committee – Next Meetings Proposed Schedule: September 9th 2025 December 2025 March 2025 29