CSOs 4 Tailings Justice

We are committed to building democratic community power to address the dangers of mine waste, including tailings facilities.



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  • MINING TRAGEDY. The 1996 Marcopper mining tragedy spelled doom for Boac River, now a dead and heavily silted waterway. (File photos from RICHARD A. REYES and Marinduque Council for Environmental Concerns)
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  • The aftermath of the tailings dam collapse at the Chinese state-owned Sino-Metals Leach copper mine near Chambishi. Photograph: Richard Kille/AP

    Patrick Greenfield and Olga Manda, The Guardian, Fri 13 Mar 2026

    While tailings dams are meant to last for ever, extreme weather events are making many unstable – with devastating consequences for nature and humans.

    As soon as the barrier broke, a flood of poison brought death to the river. Gushing through the fragile wall built to hold back mining waste in Zambia’s copper belt in February 2025, more than 50m cubic litres of acid and heavy metals poured into the Chambishi stream – a tributary of the Kafue River, the country’s longest waterway.

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  • Presentation by Prof SW Jacobsz and Dr Louis Coetzee, University of Pretoria, Faculty of Engineering