
Codelco announced that suspended development at the Andes Norte section of El Teniente could last up to two years. This extended pause follows newly identified seismic risks at depth. It compounds output challenges at the world’s largest underground copper mine and tightens global supply balances.
Underground Geotechnical Risks and Production Impact
The decision to halt work comes after six months of geotechnical analysis. Analysts revealed an emerging seismic phenomenon distinct from historical risks at the century-old operation. This disruption follows a fatal rockburst in July 2025. Codelco struggles with multi-decade low output levels. Company leadership confirmed that returning to 1.7 million tonnes of annual production by 2030 is no longer achievable.
Tightening Physical Inventories and Price Pressures
The El Teniente setback arrives amid a strained global copper market. LME on-warrant inventories are dwindling rapidly. Aggressive inventory inflows enter the United States ahead of anticipated tariffs. Analysts note that deep underground mining depletion accelerates geotechnical vulnerabilities across South American producers. Comex and LME copper prices surged to historic highs as physical deficits widen. Market focus shifts firmly toward supply constraints rather than demand weakness.

Market Impact
○ Impacted Metals: Grade A copper, refined copper cathode, copper scrap
○ Direction: Bullish
○ Time Horizon: 12–18 months
○ Affected Industries: Copper mining, electrical wiring, construction, renewable energy infrastructure, automotive
○ Related Price Reports: Copper Weekly Price Report
○ Watch Item: Monitor LME inventory levels and upcoming union updates regarding underground remediation timelines at El Teniente.
SuperMetalPrice Commentary:
Codelco’s prolonged operational setbacks at El Teniente highlight the structural vulnerability of aging underground copper assets. With major miners hitting geotechnical walls, the structural deficit in refined copper is virtually locked in for the medium term.

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