Brazilian villages evacuated after warnings of dam collapse

Read the full story in The Guardian.

The Brazilian mining giant Vale said on Saturday that communities in the southeastern state of Minas Gerais had been ordered to evacuate after independent auditors found that one of its dams could collapse at any moment…

The contamination of rivers with mining waste, or tailings, which contain high levels of iron ore and other metals, is of great concern and can last for years or even decades, experts say. Small residues of iron oxide eventually fall to the bottom of the riverbed and are brought up to the surface each time it rains heavily.


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