Company notices
Notice of Incident
2 May 2026: Notice of IncidentNotice of Incident
30 September 2025: Notice of IncidentNotice of Incident
24 June 2025: Notice of IncidentNotice of Incident
28 Oct 2023: Notice of IncidentNeighbourhood update
Neighbourhood updateArcelorMittal Dofasco and Ontario Air Regulations
ArcelorMittal Dofasco and Ontario Air RegulationsNotice of incident
3 Mar 2023: Notice of incidentNotice of incident
21 Feb 2023: Notice of incident