Described by one London disputes head as ‘the biggest class action ever’, Municipio de Mariana & Ors v BHP Group sees a claimant class of more than 700,000 bringing claims for damages in excess of £36bn arising from the 2015 collapse of Brazil’s Fundão Dam.
On 5 November 2015 the dam suffered a catastrophic failure. Nineteen people were killed and over 40 million cubic metres of iron ore waste poured into the Doce River in what became the worst environmental disaster in Brazil’s history.
