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    Eldorado Gold’s Skouries tailings filter presses: design and risk notes for engineers

    October 27, 2026|

    Reviewed by Joe Ashwell

    First reported on International Mining – News

    30 Second Briefing

    Eldorado Gold has started up the first two Metso tailings filter presses at its Skouries gold-copper project in northern Greece, enabling continuous plant operation during commissioning. Throughput is being progressively ramped up as these initial units stabilise and additional filter presses are installed and brought online. The move confirms Skouries’ shift to filtered tailings, with implications for dry-stack design, reduced tailings storage facility footprint, and tighter control of water balance in a high-rainfall, mountainous setting.

    Technical Brief

    • Metso-supplied filter presses are designed to produce low-moisture tailings suitable for dry stacking.
    • Commissioning strategy sequences additional presses to maintain redundancy and avoid unplanned plant shutdowns.
    • Filtered tailings approach reduces reliance on large conventional tailings dams in Skouries’ mountainous terrain.
    • Reduced supernatant pond volume lowers risk of overtopping and dam breach during extreme rainfall events.
    • Filtration enables tighter water inventory control, supporting compliance with Greek and EU water management regulations.
    • Dry-stack geometry simplifies downstream stability monitoring, with clearer deformation and pore pressure response than slurry impoundments.
    • Operationally, press automation and interlocks can limit operator exposure to moving equipment and high-pressure lines.

    Our Take

    Skouries’ designation as a strategic project under the EU Critical Raw Materials Act, noted in our 13 October 2026 coverage, means the Metso filter press installation will be scrutinised as a reference case for EU-aligned tailings and water management standards on copper-gold assets.

    The move to filtered tailings at Skouries in northern Greece comes just weeks after permanent grid connection was completed, signalling that Eldorado Gold is sequencing critical infrastructure (power, then tailings) to de-risk the transition from construction to full copper-gold concentrate ramp-up reported on 9 September 2026.

    Within our 1250 Mining stories, Eldorado Gold appears frequently in connection with technically complex, high-profile projects (Skouries in Greece and the McIlvenna Bay expansion in Saskatchewan), suggesting the Skouries tailings design will likely be used by the company as a template or benchmark for permitting and social licence on other polymetallic developments.

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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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