Brazil dam collapse
Dozens of people died during recent severe rainstorms in Brazil's Minas Gerais state.
By Katy Watson
BBC South America correspondent, Brumadinho, Brazil
The collapse in Brumadinho, Minas Gerais state, was Brazil's worst industrial accident.
By Jenny Hill
BBC News, Brumadinho and Munich
Nearly 300 people died in a mudslide after a dam collapsed near Brazil's town of Brumadinho in January.
By Will Grant
BBC News, Barão de Cocais, Brazil
By Daniel Gallas
BBC South America Business correspondent
Areas around two dams in Brazil have been evacuated.
Brazilian company Vale has evacuated around 500 people from a dam area in the Gongo Soco mine in the state of Minas Gerais as a preventive measure.
Residents of an area close to an Arcelor Mittal dam, also in Minas Gerais, have also been evacuated.
Last month, a Vale dam collapsed and left hundreds of people dead and missing in the town of Brumadinho.
The BBC's David Shukman explains what led to the Brazil dam collapse that killed hundreds of people, and how likely it is to happen again.
How a torrent of toxic sludge buried buildings in Brumadinho - and the risk of it happening again.
When the Brumadinho dam collapsed, a huge mudslide headed straight for Elias Nunes' truck.