Executives at Vale SA , the world’s largest iron ore miner, quashed efforts by Brazilian authorities to audit one of the company’s mining dams months before it collapsed and killed over 300 people, a state prosecutor was quoted as saying by news website G1 on Wednesday.
William Garcia, a prosecutor in Minas Gerais where the January disaster occurred, told G1 his office had filed subpoenas with Vale last June to review safety documents regarding Vale’s dam.