A report by experts of the United Nations contradicted repeated statements by the Brazilian government and the involved mining companies that the released chemicals were harmless.
聯合國專家的報告與巴西政府報告中數個主張彼此矛盾，而且巴西政府報告還有涉嫌的礦業公司宣稱他們釋出的化學物質無害。