The Threat To The Boundary Waters
The Boundary Waters faces a threat from Sulfide-ore copper mining. This type of mining is destructive because it leaves behind waste rock full of sulfates that when exposed to air and water, becomes sulphuric acid.
If these metals leak into the headwaters of the Boundary Waters, it would permanently damage all the downstream lakes, rivers and groundwater. Learn more at SaveTheBoundaryWaters.org.