❐ Mine waste dams threaten the environment, even when they don't fail
2020 Feb 24
The January 2019 collapse of a dam in Brumadinho, Brazil, sent mining tailings and mud over the landscape for miles, destroying this bridge and killing 300 people. Andre Penner/AP
Dams built to hold enormous quantities of toxic mining waste have a long history of spills. Decisions in the Pacific Northwest threaten three free-flowing rivers there.