The stability of Vale’s Sul Superior dam slid into a critical condition, prompting a warning siren to be activated Friday, the company said, citing an independent auditor.
About 500 people have already been evacuated February 8 from the area near the dam located at the Gongo Soco mine in the city of Barao de Cocais in Minas Gerais state. The miner launched a protocol to initiate level 3 of the Mining Dams Emergency Action Plan, it said.