34 dead and hundreds missing in Brazil dam collapse

At least 34 people have been killed after a dam burst at an iron ore mine in south-eastern Brazil.

Authorities said chances of finding survivors are "minimal", with more than 300 people unaccounted for. 

So far, emergency services have rescued around 366 people, of which 23 have been transferred to hospitals.

It is unclear what caused the failure of the dam.

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