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Mariana and 18 other Brazilian cities join Vale BHP dam collapse compensation agreement

A Brazilian court announced on Thursday that 19 additional cities have joined the compensation agreement reached with the miners BHP Vale Samarco over the 'collapse of the Mariana dam in 2015', including the city which was at the epicenter of the disaster.

The deal signed in October 2024 and ratified by 45 out of 49 municipalities that are eligible for funds now has the backing of these 45 municipalities.

The 2015 dam failure in an iron ore mining owned by Samarco (a joint venture between Vale, BHP and BHP) near the city of?Mariana, in southeastern Brazil killed 19 people and left hundreds homeless. It also flooded forests, and polluted?the length of the Doce River.

The agreement stipulated that 170 billion reais (32.74 billion dollars) would be paid as compensation and reparation for one of the worst environmental disasters in the country, with 6 billion reais allocated to the affected cities.

As of March 2025, however, only 26 cities were part of the agreement. Many cities felt that the 170 billion dollars in real terms was not enough to compensate the damage. Initial resistance was influenced by a parallel legal action in London against BHP, which seeks compensation for the collapse and could result in a higher amount of compensation.

In November, the London High Court ruled that BHP was responsible for the collapse of the dam under Brazilian law. In April 2027, a second trial to determine any damages payable is expected to start.

Samarco is concerned about the cities' participation in the agreement, because it wants to move beyond the uncertainty caused by the collapse.

In a press conference, Mariana Mayor Juliano Duarte stated: "We consider this an historic victory for the City." "We still have a number of individuals and companies involved in the UK case." As the city government we will continue to support these people.

The court stated that it is willing to accept 'any future adherence of the four cities whose members have not yet joined the agreement. These are Ouro Preto in Minas Gerais, Governador Valadares in Resplendor in Minas Gerais, and Colatina in Espirito Santo.

(source: Reuters)