Brazil’s Folha reported yesterday that the indictment list has been expanded to include a principal Vale engineer who doctored records about the extent of Vale’s co-use of the Fundao.
According to Deputy Roger Lima de Moura, responsible for verification, Vale contributed to the breakup because its depositions constituted 27% of the total as of the time of failure .. Vale had earlier admitted to its unauthorized use of the Fundao for its own tailings from its own immediately adjacent mine but had provided falsified records to authorities claiming its use was no more than 5%..
The indictment of the Vale engineer also stated the composition of tailings Vale deposited in the Fundao had been falsely reported..
Moura said that the main causes of the failure were drainage problems, use of low-quality material for the construction of the dam, poor monitoring and lack of control of the amount of tailings deposited.
The investigation, according to the delegate, also concludes that the location where the dam was breached –” called “retreat of the left jamb“ “– was a modification to the original design ( not approved or initiated by the dam designer. and that from 2012 when De Avila was dismissed there was no qualified engineer in charge.
The Federal Police also pointed out that Samarco decreased its investment in “Geotechnical work”by 29%2012-2015, while increasing investments in production, which in turn increased tailings volume generated.
Although not mentioned in this additional indictment of engineer Vale had commissioned its own assessment of the major expansion referred to in the police report and was aware that there was insufficient capacity in the Fundao to accommodate the additional tailings of the expansion and no room on site for an expansion and nevertheless continued its own depositions.