Sudbury: Vale opens the books on Sudbury tailings dams following collapse in Brazil (CBC News Sudbury – June 19, 2019)

Mining giant releases report detailing its dozens of tailings dams in the Sudbury basin

Vale says it is currently doing work to stabilize some of its tailings dams in Sudbury, but stresses that there is no risk to the public.

The company this month released a report on the state of its dams around the world that it says was asked for by a large group of investors represented by the Church of England, following the collapse of a Vale dam in Brazil in January that killed 270 people.

The report includes dozens of dams that Vale manages in the Sudbury basin to hold mining waste, some dating back to 1929.

Eight of them, in what’s referred to as the M and P tailings areas near Copper Cliff, are listed as having some stability problems.

“Routine monitoring and inspection over the years has revealed some soft, silty layers in some areas of the shell of six of these dams,” reads a statement from Vale, which declined an interview with CBC.

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