Highland Valley Copper strike: production and scheduling impacts for mine planners
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
Strike action by United Steelworkers Local 7619 has forced Teck Resources to run its Highland Valley Copper mine in British Columbia, Canada’s largest copper operation, at reduced capacity after 1,200 workers walked off the job. Highland Valley produced 127,100 tonnes of copper in 2025, about 28% of Teck’s total 453,500-tonne output, and has an approved life extension to 2046, so any prolonged stoppage could materially affect Teck’s concentrate supply and mill scheduling. The dispute over wages, pensions and staffing comes as Teck pursues a merger with Anglo American to form a top-five global copper producer.
Technical Brief
- Strike involves United Steelworkers Local 7619, representing about 1,200 site workers across operations.
- All 944 members participating in the strike ballot voted in favour of industrial action.
- Walkout commenced Saturday following expiry of a 72‑hour strike notice issued by the union.
- Previous collective agreement for Highland Valley Copper expired on 30 September, leaving operations under interim arrangements.
- Dispute focuses on wages, pensions and staffing, with union citing difficulties recruiting and retaining skilled workers.
- Teck’s contingency plan keeps the mine running at reduced capacity while prioritising safety and environmental management.
- Teck Resources’ market capitalisation sits at about C$41.2 billion, with shares trading near C$84.01.
Our Take
With Highland Valley Copper accounting for 28% of Teck Resources’ total copper output, any prolonged strike directly tightens supply from a major Western producer at a time when related coverage shows copper trading near record levels on both Comex and the LME.
Teck Resources has appeared repeatedly in our recent copper coverage alongside Anglo American and Freeport-McMoRan, signalling that operational disruptions at its flagship Canadian asset will be closely watched by investors already sensitive to guidance changes and policy risks in the copper space.
The approved mine life extension to 2046 at Highland Valley means labour terms settled in this dispute will likely set a template for decades of operating cost structure and workforce expectations at one of Canada’s key copper hubs in British Columbia.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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