By Ben McGregor
Educational content only, not investment advice. Mining stocks are high risk.
Teck Resources said workers began a strike at its Highland Valley Copper mine in British Columbia on Saturday, October 24, 2026. The company reported that operations continue at reduced capacity. The production impact depends on how long the strike lasts. Highland Valley is Canada’s largest copper mine and a major source of Teck’s copper output. The labour action follows the expiry of the previous collective agreement on September 30 and the end of a 72-hour strike notice.
Teck stated that strike action by United Steelworkers Local 7619 has commenced and that contingency plans prioritize safety and environmental management. The company said it remains committed to negotiating a collective agreement that is fair and reasonable for employees and supports the ongoing viability of the operation. The union represents about 1,200 workers at the mine. In its strike notice the union said it is seeking higher wages and improved pensions because the mine faces challenges attracting and retaining skilled workers amid staffing shortages. Kyle Wolff, president of Local 7619, said, “Despite record profits, Teck Resources isn’t paying workers what we deserve.” All 944 members who participated in the strike vote supported a walkout.
Highland Valley produced 127,100 tonnes of copper in 2025. That volume accounted for about 28 percent of Teck’s total copper production of 453,500 tonnes that year. The mine is an open-pit operation near Logan Lake, roughly 200 kilometres northeast of Vancouver. Teck approved a life-extension project that is designed to keep the mine operating through 2046. A life extension means additional investment in equipment and infrastructure so that production can continue beyond the original mine plan. The current strike does not change that longer-term approval, but a prolonged reduction in output would affect near-term copper deliveries and costs.
Teck’s copper business is a core part of its portfolio after the company shifted focus away from steelmaking coal. Lower production at Highland Valley reduces the volume available for sale while fixed costs at the site continue. If the strike lasts more than a few weeks, the company may need to revise its full-year copper guidance. Guidance is the range of production or cost numbers a company expects to achieve in a given period. For British Columbia the mine is one of the province’s largest industrial employers and a significant source of copper concentrate. Copper concentrate is the intermediate product that is shipped to smelters for further processing into metal. Any extended disruption also highlights labour-market tightness in the province’s mining sector, where several operations have reported difficulty hiring skilled trades.
Highland Valley is the largest copper mine in Canada, but British Columbia also hosts other copper projects at various stages. Newmont’s Red Chris mine and Teck’s own Quebrada Blanca operation in Chile are separate assets. Within British Columbia, smaller producers and development-stage projects face the same labour and permitting environment. A strike at the largest domestic copper mine draws attention to the province’s overall mining competitiveness. Investors who follow Canadian copper exposure therefore watch both company-specific labour outcomes and broader provincial policy on permitting and power costs.
The strike is already under way, so the immediate risk is a longer-than-expected duration that forces Teck to lower its 2026 copper production guidance. The company has not yet quantified the daily production loss. If the reduced-capacity operation continues for several weeks, unit costs at Highland Valley would rise because fewer tonnes are produced while many fixed expenses remain. Teck’s shares closed at C$84.45 on the Toronto Stock Exchange on Monday, October 26, 2026. The stock has declined from levels above C$90 earlier in the month, though broader copper-price moves and other company news have also contributed to the change.
Any joint statement or separate update from Teck or United Steelworkers Local 7619 on the status of negotiations. Teck’s next quarterly results will show whether the strike has affected year-to-date production or full-year guidance. Copper price movements will influence the company’s margins if production is reduced. Provincial updates on mining labour or permitting in British Columbia may also provide context for the wider sector.
Workers represented by United Steelworkers Local 7619 began a strike on October 24, 2026, after contract talks failed. Teck said operations continue at reduced capacity and that the production impact depends on the length of the strike.
Highland Valley is Canada’s largest copper mine. It produced 127,100 tonnes of copper in 2025, about 28 percent of Teck’s total copper output that year. The company has approved a life extension that would keep the mine operating through 2046.
Any update from Teck or the union on the length of the strike or progress toward a new agreement. Teck’s next results will show whether the reduced capacity affects full-year copper guidance. Copper price moves will also matter for the company’s margins.
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Ben McGregor authors the Weekly Roundup at CanadianMiningReport.com, providing sharp analysis of the metals and mining sector. With a talent for spotting trends, Ben distills complex market shifts into clear, engaging insights on TSXV junior miners. His weekly updates cover gold, copper, uranium, and more, blending data-driven perspectives with a knack for identifying opportunities. A vital resource for investors, Ben’s work navigates the dynamic junior mining landscape with precision.