Mariana disaster: a look back at the 2015 tragedy

Mariana disaster
Waters of the Rio Doce were invaded by mud

Today is the three-year anniversary of the Mariana disaster. After an iron ore tailings dam collapsed in the municipality of Mariana, some 65 kilometers from Belo Horizonte, the equivalent of 25,000 Olympic swimming pools of toxic sludge was spilled, destroying entire towns and resulting in 19 deaths. It also devastated the Rio Doce. Thousands of animals were killed and experts at the time reckoned that it would take decades to reverse the catastrophic damage caused.

A tragedy of this magnitude doesn’t happen overnight. It was the result of a series of mistakes, neglect and a lack of respect. Samarco, the...

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