Brazilian federal prosecutors said on Wednesday they opened an investigation into alleged environmental crimes by Roberto Carvalho, CE of iron-ore mining company Samarco Mineração SA, over a deadly damburst last year. According to a statement released by prosecutors, Samarco, a 50:50 joint venture between Brazil’s Vale SA and Australia’s BHP Billiton Ltd, has failed to fully implement emergency precautionary measures ordered by Brazil’s environmental protection agency Ibama in the wake of the October 2015 tailings dam burst.












