The iron ore dam, located in the Brumadinho municipality of Brazil’s southeastern Minas Gerais state, collapsed on January 25, triggering heavy mudflows. According to various local media reports, emergency warning sensors at the site failed to go off.
The Globo news outlet reported on Wednesday, citing e-mail exchanges between Vale’s engineers and employees of two other companies, that the sensor issues had been detected two days prior to the dam collapse.
The company has reportedly shared the e-mails and other documents with the Brazilian police and prosecutors.
The bodies of 134 victims of the dam collapse have been identified, while 183 people are feared missing.