El Teniente

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  August 28, 2025

  Chile regulator tightens restart rules at Codelco’s El Teniente after fatal collapse

  BY Lara Browne
  Sernageomin, Chile’s mining regulator, and Codelco, state copper producer, have set stricter conditions for bringing shuttered zones of the El Teniente mine back online after a July 31 collapse that killed six workers. The regulator now requires a mine-wide follow-up and monitoring plan to assure stability and safety across underground deposits that remain closed. Codelco—having...
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  August 5, 2025

  Codelco halts El Teniente underground after six deaths; audit to probe 4.2-magnitude collapse

  BY Lara Browne
  Codelco, Chile’s state copper producer, and Sernageomin, the national mining regulator, have suspended underground operations at El Teniente after six workers died in a tunnel collapse triggered by a 4.2-magnitude tremor; the company will convene an international panel to determine causes and remedial actions amid concerns over near-term copper supply from one of the world’s...
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