Codelco halts Andes Norte expansion at El Teniente after new seismic risks

Codelco suspended development and construction at the Andes Norte expansion at El Teniente on August 4, 2026, after new seismic risks appeared. Union sources said the pause could last as long as two years. El Teniente output was down about 27% year on year in the first five months of 2026, which keeps Chile's largest underground mine a supply risk.

• Andes Norte development and construction suspended August 4, 2026
• Union sources say the pause could last as long as two years
• El Teniente output down about 27% y/y in January-May 2026