By Lise Alves, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL – In the early hours of Sunday, warning sirens were once again issued by mining giant Vale around the town of Brumadinho, Minas Gerais, alerting residents to move to higher ground. The alert was given less than 24 hours after a dam broke killing at least 37 people.
"Vale reports that at around 5:30 AM on Sunday, it triggered warning sirens in the region of the Feijão Mine in Brumadinho (MG), due to the detection of increased water levels in the instruments that monitor the VI dam," read a . . .