https://www.northernminer.com/
Construction details in the tailings dam at Vale’s (NYSE: VALE) Corrego do Feijao iron ore mine in Brazil may have caused the burst that killed at least 270 people when 10 million cubic metres of sludge destroyed neighbouring settlements and took out a railway bridge, according to Swiss researchers.
Why the dam broke in 2019 specifically – three years after the pond was last loaded with new tailings – and why no significant displacements had been detected before the collapse, is the focus of a new paper by scientists at the university ETH Zurich.