Fourth Deceased Miner Found in Chile’s El Teniente Copper Mine Collapse

Web Editor

August 3, 2025

Background on El Teniente Mine and Codelco

El Teniente is the world’s largest underground copper mine, owned by Chile’s state-owned mining company Codelco. Located in Rancagua, approximately 100 kilometers south of Santiago, the mine is a significant contributor to Chile’s status as the world’s leading copper producer, with annual output of 5.3 million tonnes.

Collapse and Search Efforts

On Thursday, a collapse occurred in El Teniente mine due to an unexplained seismic event. The incident resulted in the death of one worker and left five miners trapped. Search and rescue teams have since recovered four bodies, with one miner still missing.

  • The mine’s operations have been halted since Friday to facilitate search efforts.
  • Over 100 rescuers are participating in the ongoing rescue mission, one of the most tragic accidents at El Teniente in the past three decades.
  • All trapped miners were found in the same location where the collapse occurred.

Impact and Significance

El Teniente’s annual copper production reached 356,000 tonnes in the previous year, accounting for 6.7% of Chile’s total copper output. The mine’s shutdown, albeit temporary, highlights the importance of safety measures and emergency protocols in such large-scale mining operations.

Key Questions and Answers

  • Who owns El Teniente mine? The mine is owned by Codelco, Chile’s state-owned mining company.
  • What is the significance of El Teniente? It is the world’s largest underground copper mine and a crucial contributor to Chile’s status as the global leader in copper production.
  • What caused the collapse? The exact cause is still under investigation, but it was triggered by a seismic event.
  • How many miners are affected? Initially, five miners were trapped following the collapse; four bodies have been recovered, and one miner remains missing.
  • What is the impact on production? El Teniente’s operations have been temporarily halted to allow for search and rescue efforts.