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    SSR Mining sells Çöpler mine stake: design failure and risk lessons for engineers

    March 25, 2026|

    Reviewed by Joe Ashwell

    SSR Mining sells Çöpler mine stake: design failure and risk lessons for engineers

    First reported on MINING.com

    30 Second Briefing

    SSR Mining has agreed to sell its 80% stake in the Çöpler gold mine in eastern Anatolia to Cengiz Holding for US$1.5 billion in cash, sending SSR shares up 5.3% in pre-market trading and valuing the company at about US$5 billion. The transaction covers the mine, licences and all associated assets and liabilities, following a 2024 heap leach failure and landslide that left at least nine miners missing and was later linked to a third-party design flaw. SSR has already spent nearly US$150 million on reclamation and remediation, and analysts say the sale removes a major operational and reputational risk overhang.

    Technical Brief

    • Failure mechanism attributed to a third‑party engineered heap leach design flaw, confirmed by independent technical review.
    • SSR Mining has already deployed nearly US$150 million on reclamation and remediation works post‑failure.
    • Independent review findings triggered SSR’s own internal engineering review of Çöpler’s design, operation and risk controls.
    • Ongoing reclamation likely includes regrading, buttressing and drainage reconfiguration to stabilise failed leach slopes.
    • Monitoring going forward will need dense geotechnical instrumentation and real‑time slope/heap surveillance to regain regulatory confidence.
    • For similar heap leach operations, the case reinforces the need for rigorous third‑party design verification and independent geotechnical audits.

    Our Take

    Cengiz Holding’s purchase of SSR Mining’s 80% stake at Çöpler follows its separate deal to acquire First Quantum’s Çayeli copper-zinc mine, signalling a deliberate build-out of a diversified metals portfolio in Türkiye that could give it significant regional leverage in permitting and contractor markets.

    With at least $150 million already spent on reclamation and remediation at Çöpler after the 2024 landslide, the transaction effectively transfers a complex long-tail closure and liability profile to a domestic operator, which our database suggests is relatively uncommon in recent gold-mine divestments tagged under Failure and Safety.

    SSR Mining’s market value of about $5 billion versus the $1.5 billion cash consideration for Çöpler implies a substantial balance-sheet reset, likely freeing capital for lower-risk jurisdictions such as Canada, while Cengiz assumes both the upside and regulatory scrutiny attached to restarting a high-profile Turkish gold asset.

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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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