Environment & Energy Report

Brazilian Tin Waste Dam Failure Spurs Water Quality Monitoring

April 1, 2019, 7:53 PM

Brazilian state environmental authorities are monitoring downstream water quality after torrential rains caused the rupture of an Amazon area dam storing tin-mining waste, officials said April 1.

The March 29 dam collapse caused no deaths or injuries but destroyed seven bridges, isolated 100 families, and spilled into nearby streams, according to the Environmental Secretariat of Rondonia State (Sedam), where the accident occurred.

Officials don’t expect that sludge entering streams above the washed-out bridges will contaminate them or the Vermelho River into which they flow with heavy metals because 99 percent of the long-inactive dam’s waste consists of clay...

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