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    STRACON’s Los Bronces tailings dam contract: lifecycle model insights for engineers

    January 1, 2026|

    Reviewed by Tom Sullivan

    First reported on International Mining – News

    30 Second Briefing

    STRACON has secured an integrated engineering, construction, financing and long-term operations and maintenance contract for the Pérez Caldera Tailings Dam at Anglo American Sur’s Los Bronces copper operation in Chile’s Lo Barnechea district. The scope combines dam design and build with funding and multi-year O&M, signalling a bundled delivery model for critical tailings infrastructure rather than separate EPC and operator contracts. For geotechnical and tailings engineers, this points to growing demand for contractors capable of lifecycle stewardship under Chile’s stringent post-Brumadinho regulatory environment.

    Technical Brief

    • Contract scope spans engineering design, construction, financing and multi-year O&M for the Pérez Caldera facility.
    • STRACON will act as a single integrated provider rather than separate EPC and O&M contractors.
    • Long-term O&M inclusion implies STRACON will manage monitoring, inspections, and routine dam safety surveillance.
    • Financing component shifts part of the upfront capex burden from Anglo American Sur to STRACON.
    • Lifecycle contract structure supports continuity of design intent through construction, operation and future raises or modifications.
    • Integration of funding with performance obligations tightens alignment between construction quality and long-term geotechnical stability.
    • For Chilean tailings facilities, such bundled models concentrate accountability for compliance with evolving safety regulations.

    Our Take

    Los Bronces in Chile features regularly in our Mining coverage as a benchmark high-altitude Andean operation, so tailings work there by STRACON is likely to be watched by other operators facing similar geotechnical and seismic conditions in the central Andes.

    Among the 922 tag-matched pieces on Projects, Contract Award and Safety, relatively few focus on tailings dams in the Lo Barnechea district, suggesting this Pérez Caldera Tailings Dam contract could signal more specialised outsourcing of TSF construction and upgrades in central Chile.

    Anglo American Sur S.A.’s decision to contract out tailings dam works at Los Bronces aligns with a pattern in our database where major Chilean operators increasingly rely on specialist contractors for high-consequence infrastructure, which can shift risk allocation and demand tighter performance-based specifications in TSF contracts.

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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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