Brazil’s Brumadinho Dam Collapse: Danger Emerged After Decommissioning

The disaster near the small town of Brumadinho in southeastern Brazil occurred shortly after midday: on 25 January 2019, at a nearby iron ore mine, the tailings dam – a storage area for the sludgy, fine-​grained residues from ore processing, or “tailings” – collapsed. A huge mudslide of around 10 million cubic metres of...