Reuters reveals how Brazil miner Vale knew deadly dam had heightened risk of collapse

Reuters broke the news that iron ore mining giant Vale was aware last year of a heightened risk of rupturing at its dam in Brazil that collapsed in January killing at least 165. The report, dated Oct. 3, 2018, classified the dam at Brumadinho in the state of Minas Gerais as being two times more likely to fail than the maximum level of risk tolerated under internal guidelines.