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copper|explosives|financial|mining|projects|drilling

Codelco says it has yet to reach missing workers at El Teniente mine

1st August 2025

By: Reuters

  

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SANTIAGO – Chilean copper producer Codelco has still not had contact with five missing workers at El Teniente's Andesita unit following a seismic incident that killed one person, El Teniente's general manager Andres Music said on Friday.

He added that the company expected aftershocks from the incident to diminish in the next 12 hours, allowing Codelco to begin efforts to reach the workers.

"The event we recorded yesterday is one of the largest events - if not the largest - that the El Teniente mine has experienced in decades," Music said in a press conference.

The incident registered a magnitude of a 4.2 quake, he noted.

Andesita is one of Codelco's newest projects at its flagship El Teniente complex, and was due to begin production in the second quarter of this year.

Music did not address how the incident would affect Codelco's output in producing areas of the mine. Codelco is due to report its financial results for the first half of the year on Friday, as previously scheduled.

Music said Codelco was investigating the accident's cause.

Although neither explosives nor drilling led to the incident, he said seismic events at El Teniente sometimes are triggered by mining activities.

Chile is also prone to regular earthquakes of varying magnitudes.

Edited by Reuters

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