One of Brazil’s worst environmental disasters - a dam collapse that also killed more than 200 people - could have been foreseen with the right monitoring technology, according to a new study by the University of Nottingham and Durham University, UK. The high-profile catastrophe took place on 25 January 2019 at a tailings dam near the Córrego do Feijão iron ore mine, close to the town of Brumadinho, in the Minas Gerais state in south-east Brazil.