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Antamina Halts Peru Copper Mine After Fatal Accident; Restart Uncertain
Peru's Antamina copper-zinc mine has suspended operations following a fatal workplace accident at its Yanacancha site on October 27, 2026. The shutdown interrupts a year of recovering copper production, with no confirmed timetable for restarting the operation.
By Paul Ploumis
Updated: October 28, 2026
Incident date: October 27, 2026
Key Points
- Operations: Antamina suspended mining activities following a worker fatality at Yanacancha.
- Investigation: The company is coordinating with authorities; no restart date has been confirmed.
- Copper production: Output reached approximately 342,104 tonnes in January–August 2026, up 48.7% year over year.
- Ownership: BHP, Glencore, Teck Resources and Mitsubishi hold interests in the mine.
SEATTLE (Scrap Monster): Peru's Antamina copper-zinc mine has initiated a precautionary safety shutdown following the death of an operations employee at its Yanacancha facilities in the Áncash region.
In an official statement dated October 27, Antamina identified the employee as Isacc Rolando Alvis Martinez and confirmed that the company had contacted his family and initiated an investigation in coordination with the relevant authorities.
The company has not disclosed the circumstances leading to the accident.
Reuters reported that no timetable had been established for restarting operations while the investigation continued.
Shutdown Interrupts Strong Copper Production Recovery
The suspension comes as Antamina was recovering from production disruptions experienced in 2025, when copper output declined approximately 9% following another fatal workplace accident.
Peruvian mining production data cited in market reports show that Antamina produced approximately 342,104 metric tons of copper during January–August 2026, an increase of 48.7% from the corresponding period last year.
The operation represented approximately 18.7% of Peru's reported copper production over those eight months.
Antamina is one of Peru's largest copper and zinc producers. Its shareholders are BHP and Glencore, each holding 33.75%, Teck Resources with 22.5%, and Mitsubishi Corporation with 10%.
ScrapMonster Edge: Production Impact Depends on Shutdown Duration
Antamina's suspension affects an operation that contributed nearly one-fifth of Peru's copper production during the first eight months of 2026.
The mine produces copper and zinc concentrates, which are transported through a dedicated pipeline to coastal shipping facilities.
However, no confirmed production-loss estimate or restart schedule has been released.
Market implication: A prolonged interruption could affect concentrate availability, but the actual impact will depend on the shutdown's duration, operating inventories and the timing of any restart. No immediate effect on copper or zinc prices can be established from the suspension alone.
Antamina has begun investigating the incident and coordinating with Peruvian authorities. Further company updates will be needed to establish the circumstances of the accident and when operations may safely resume.
Sources: Antamina Official Statement, October 27, 2026; Reuters; Peruvian mining production statistics.
Original reporting courtesy: Mining.com
