Chile Strike Set at World’s Top Copper Mine

CHILE · MINING

Supervisors at Escondida in northern Chile, the world’s largest copper mine, called a strike after state mediation with operator BHP failed on Tuesday. Copper is the metal in wiring, cars and power grids, so a stoppage there matters to US buyers and investors.

The Supervisors and Staff Union N°2, which has about 1,020 members, called the walkout for the first shift at 8:00 a.m. on Wednesday. BHP had kept its final offer of 28 million pesos (about US$28,700) for each worker open until 11:59 p.m. on Tuesday, Diario Financiero reported.

How the Copper Mine Talks Broke Down

BHP asked for mediation before the Dirección del Trabajo, Chile’s labour inspectorate, on 5 October, which put the first strike call on hold. The talks ran from 6 to 13 October, the mining news site Redimin reported.

Both negotiating teams signed the record that closed mediation without agreement on Tuesday, the regional broadcaster Antofagasta TV and Redimin reported. With mediation closed, the legal strike could start at 8:00 a.m. on Wednesday 14 October, Diario Financiero said.

The union said it made a full proposal on Monday that took in 90% of the company’s proposals as well as the union’s central points. It said the company “decided not to respond and broke up the negotiating tables”, El Ciudadano and Radio Paulina reported.

The union added that responsibility for the strike “rests exclusively with the company and its negotiating committee”. Members had backed a strike with about 95% of the vote in a ballot held from 28 to 30 September, Redimin reported.

What BHP Says

BHP’s latest comments on the copper mine dispute came in an internal statement seen by Diario Financiero, the Chilean business daily. In it, the company said it would keep its final offer valid until 11:59 p.m. on Tuesday 13 October.

The company added that union leaders had the legal power to accept the offer up to that hour. Antofagasta TV reported that BHP also reiterated its commitment to worker safety in a strike scenario.

Redimin reported that the company defends its offer as an increase in pay, bonuses and allowances, with new benefits on top. It said BHP considers its pay among the most competitive in the mining industry.

Diario Financiero and Redimin put the final offer at 28 million pesos (about US$28,700) per worker, including a soft loan. Of that, 25 million pesos (about US$25,600) are bonuses and three million pesos (about US$3,100) are the loan, Redimin reported.

The union’s statement said the offer still lacked a pay rise and closing benefits in line with the market, Emol and 24horas reported. Conversions use about 976 pesos to the US dollar on 14 October 2026.

What the Union Wants

The union, led by president Alexis Barrera, is pressing for higher salaries, a monthly production bonus and what it calls an objective performance evaluation. Barrera has said supervisors want terms like those other unions at the mine already won, Redimin reported.

The union also rejects company proposals to share workers’ biometric data with outside parties, limit some benefits and allow replacements during a strike. It says those proposals could affect its members’ fundamental rights, Radio Paulina and 24horas reported.

Diario Financiero reported that the union had begun setting up a temporary camp at the entrance to the copper mine. Sindicato N°1, for operators and maintenance workers, warned its members could stop work where safety conditions are missing, the paper said.

Why Escondida Matters Beyond Chile

Escondida produced about 1.3 million tonnes of copper in 2025, roughly a quarter of Chile’s output, La Tercera and Redimin reported. Redimin put the 2025 figure more precisely at about 1.345 million tonnes.

La Tercera reported that Chile mined 369,500 tonnes of copper in August, 13% less than a year earlier. Output from January to August reached 3.2 million tonnes, down 8%, the paper said.

The dispute comes during a tense season in Chile’s copper belt, with workers at Centinela, a mine run by London-listed Antofagasta Minerals, already on strike. BioBioChile reported on Tuesday that copper prices in London were near a record, citing Cochilco, Chile’s state copper commission.

This article follows our report of 13 October, Escondida Strike Deadline Hits Chile’s Top Copper Mine, on BHP’s final offer. Since then, mediation has formally ended without a deal.

What It Means for You

A 50% US tariff on semi-finished copper products such as pipes and wire took effect on 1 August 2025, the White House said. Copper ores, concentrates and refined cathodes were left out of those duties.

That means a supply shock at a Chilean copper mine reaches US buyers mainly through the global price rather than through tariffs. Manufacturers, builders and power companies that buy copper therefore have a stake in how long any stoppage lasts.

For investors, BHP shares, which also trade in New York, and copper-linked funds are the most direct exposure to the dispute. Any price effect depends on how many supervisors walk out and whether the mine keeps running during the strike.

What Is Not Known

BHP has not said publicly how a strike would affect output at the copper mine or whether it has a contingency plan. Redimin reported that no confirmed data yet put a figure on any production loss.

It was not clear before the first shift how many of the 1,020 members would walk out, or whether the mine could keep running. Neither side has said how long a stoppage could last or when talks might resume.

More: Chile news in English, every day from The Rio Times.

Frequently Asked Questions

What is the Escondida copper mine?

Escondida is an open-pit copper mine in the Atacama Desert of northern Chile, run by Australian mining group BHP. Chilean media describe it as the world’s largest copper mine, with about 1.3 million tonnes produced in 2025.

Why are Escondida’s supervisors going on strike?

The Supervisors and Staff Union N°2 wants higher salaries, a monthly production bonus and a fairer performance evaluation. It rejected BHP’s final offer of 28 million pesos (about US$28,700) per worker, which included a soft loan.

When does the Escondida strike start?

The union said the strike would start with the first shift on Wednesday 14 October, at 8:00 a.m. local time (7:00 a.m. ET). It follows the end of state mediation without a deal on Tuesday 13 October.

Will the strike stop the copper mine?

The union’s president has said the mine cannot operate without its supervisors, La Tercera reported. BHP has not said how much output a strike would cost or whether it has a contingency plan.

Does the United States tax copper from Chile?

A 50% US tariff on semi-finished copper products such as pipes and wire took effect in August 2025. Copper ores, concentrates and refined cathodes were exempt, the White House said at the time.

Sources: Diario Financiero, 13 October 2026; Redimin, 14 October 2026; La Tercera, 14 October 2026; Emol, 13 October 2026; 24horas, 14 October 2026; Antofagasta TV, 13 October 2026; El Ciudadano, 13 October 2026; Radio Paulina, 13 October 2026; BioBioChile, 13 October 2026; The White House (copper tariff fact sheet), 30 July 2025.

Editorial responsibility: Matthias Camenzind, Editor-in-Chief · Editorial standards · Report an error

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