Mining News
Rio Tinto Restarts Oyu Tolgoi After Seismic Incident
Rio Tinto has begun progressively restarting underground operations at its Oyu Tolgoi copper-gold mine in Mongolia after safety reviews following an October 29 seismic incident. Three employees were injured, with two continuing treatment. Separately, border delays between Mongolia and China have reduced truck availability for copper concentrate shipments.Capstone Copper Commits $3 Billion to Double Chilean Output by 2031
Capstone Copper plans to invest more than US$3 billion in Chile to double its copper production by 2031. The program includes US$2.3 billion for Santo Domingo and approximately US$220 million for Mantoverde expansions, with additional investment in mine development and exploration.Antamina Halts Peru Copper Mine After Fatal Accident; Restart Uncertain
Antamina has suspended operations at its Yanacancha copper-zinc mine in Peru following a fatal workplace accident. The October 27 shutdown interrupts recovering copper production, which increased 48.7% year over year during January–August 2026. The company has launched an investigation, but no restart date has been confirmed.Codelco, BHP Sign US$40M Chile Copper Exploration Deal
Codelco and BHP have finalized an agreement to explore the Anillo copper project in Chile's Antofagasta region. BHP may invest up to US$40 million in geological surveys and drilling across the 24,000-hectare property, advancing a partnership first announced in May 2025.Teck Highland Valley Copper Output Cut Amid Strike
Teck Resources' Highland Valley Copper mine in British Columbia is operating at reduced capacity following an October 24 strike by unionized workers. Approximately 1,200 employees are represented by United Steelworkers Local 7619. Negotiations remain unresolved over wages and pensions, while Teck says the eventual impact on copper production depends on the duration of the disruption.Brazil Supreme Court Suspends Belo Sun Gold Mine Permit
Brazil’s Supreme Court has temporarily suspended the installation license for Belo Sun’s proposed Volta Grande gold mine in Pará amid unresolved Indigenous consultation and environmental requirements. The company says the suspension could be lifted if a pending agreement with FUNAI receives judicial approval.Artemis Gold Q3 Output Jumps 14% at Blackwater
Artemis Gold’s Blackwater Mine produced 69,546 ounces in the third quarter, up 14% year over year. Nine-month output has already surpassed the mine’s entire 2025 production as a major processing expansion approaches commissioning.Centinela Copper Strike Talks Resume as Output Risk Grows
Antofagasta’s Centinela copper mine and two striking unions have returned to mediation after a week-long stoppage. Unions say truck activity has been cut roughly in half and warn November production could be hit if the dispute continues.Fatal Avalanche Strikes Codelco’s El Teniente Mine in Chile, Killing Two Workers
Two subcontractor workers were killed after an avalanche struck the open-pit area of Codelco’s El Teniente copper mine in Chile. The affected pit remained suspended while underground mining and processing continued, adding another operational and safety setback for Chile’s copper industry.