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    Codelco’s Ministro Hales to 2054: design and risk notes for mine engineers

    January 15, 2026|

    Reviewed by Joe Ashwell

    Codelco’s Ministro Hales to 2054: design and risk notes for mine engineers

    First reported on International Mining – News

    30 Second Briefing

    Codelco’s Ministro Hales Division in Chile has secured unanimous approval from Antofagasta’s COEVA for its Future Development EIA, extending mine life from 2026 to 2054 on a planned investment of US$2.8 billion and enabling higher copper production. The long-life plan will require expanded open pit and underground works, new waste and tailings handling capacity, and upgrades to existing concentrator and smelting circuits. Geotechnical and environmental teams now face multi-decade commitments on pit slope stability, tailings stewardship and water management under tighter Chilean regulatory scrutiny.

    Technical Brief

    • Extended operation demands long-term geotechnical monitoring of high walls and dumps under evolving slope-stability criteria.
    • Life extension implies redesign of pit slope angles, berm widths and ramp geometries to maintain safety factors.
    • New waste and tailings capacity will trigger updated dam safety classification, emergency action plans and periodic safety reviews.
    • Higher throughput in concentrator and smelter requires upgraded dust, SO₂ and arsenic capture systems to meet occupational limits.
    • Longer mine life increases cumulative seismic exposure, necessitating robust design for tailings and critical structures under seismic codes.
    • Operational changes must integrate traffic safety management for expanded haulage fleets, including collision-avoidance and fatigue controls.

    Our Take

    In our database of Chilean copper projects targeting 2026 milestones, Codelco already features prominently alongside Collahuasi and Rajo Inca, so a 2026–2054 window for the Ministro Hales Division (DMH) Future Development project signals that Antofagasta Region capacity will remain a backbone of national supply planning rather than a bridging asset.

    The US$2.8 billion investment at Ministro Hales sits against a backdrop of Codelco also committing capital and management bandwidth to lithium via Nova Andino Litio SpA, suggesting internal competition for project execution resources and a likely push to standardise brownfield expansion practices across copper and brine assets.

    Codelco’s recent MoU with Hexagon on collision avoidance and autonomy indicates that the extended life of the Ministro Hales Division gives a long enough runway to justify rolling out higher-level fleet automation and safety systems there, which could materially influence operating cost and safety performance over nearly three decades.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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