Vale's lingering waste risk exposed by Brazil deluge

Tailings dams remain the Achilles heel of the world’s second largest iron ore producer three years after the Brumadinho dam disaster.

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Brumadinho ,Bahia ,Brazil ,Minas Gerais ,Acre ,Brazilian ,Carlos Martinez ,Bloomberg ,University Of Itajub ,Minas Gerais Industry Federation Fiemg ,Minas Gerais Industry Federation ,Federal University ,