Some impacts on the environment is that when it rains, sulfuric acid leaks out metals and chemicals from the waste and creates acid mine damage which can contaminate lakes, rivers, and groundwater. It can affect human health, fish, wildlife, and damages entire ecosystems.
2 companies looking to mine gold, silver, and copper, were awarded exclusive rights to prospect on state owned tracts thanks to action by state officials.
Sulfide mining in MN products toxic waste that could irreversibly damage Minnesota fragile lakes, rivers, and natural resources. Mining products such as Arsenic, Manganese and Thallium, have been shown in hight levels to increase the risk of cancer.