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The Forest Service sought public comment on its Environmental Impact Statement (EIS) on prospecting for hardrock mining in the Superior National Forest. The draft EIS was intended to analyze the potential environmental effects of prospecting for precious metals in the Superior National Forest, and propose measures to mitigate environmental effects.
Hardrock mining has not previously taken place in Minnesota. The first proposed project, NorthMet, petitioned by PolyMet, is currently under environmental review. Hardrock mining, also known as sulfide mining, can be far more harmful to the environment than iron ore mining that has traditionally taken place in Minnesota. Sulfide mining produces sulfuric acid, also called acid mine drainage, as a by-product that can affect the surface waters and wildlife around the mining site for hundreds of years.
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| Hardrock mining has not previously taken place in Minnesota. The first proposed project, NorthMet, petitioned by PolyMet, is currently under environmental review. Hardrock mining, also known as sulfide mining, can be far more harmful to the environment than iron ore mining that has traditionally taken place in Minnesota. Sulfide mining produces sulfuric acid, also called acid mine drainage, as a by-product that can affect the surface waters and wildlife around the mining site for hundreds of years. |
Truck mounted drilling rig, photo courtesy of DNR |
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The Forest Service has not yet responded to the comments submitted by MCEA and others, or issued the final EIS.
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MCEA Documents
Comments on the Hardrock Mineral Prospecting Permit DEIS
Comments on the scope of the EIS
Outside Links
Forest Service page on Federal Hardrock Mineral Prospecting Permit EIS