Copper Mining in Minnesota: Is it worth it? Maria Nuthak

Minnesota has a secret. Below it's towering red pine forests and sky-blue waters is the third largest copper and nickel reserve on this planet. Although northern Minnesota has been mined for iron ore for over a century, mining for copper and nickel comes with a price. Read about the history of mining in Minnesota and how it supported the steel industry through both of our world wars and why copper, nickel, and other precious metals are in such high demand in our increasingly industrialized world. Compare the environmental impact iron mining had on the landscape of Minnesota's arrowhead region and why copper and nickel mining will be much different. Copper mining Minnesota...is it worth it? Это и многое другое вы найдете в книге Copper Mining in Minnesota: Is it worth it? (Maria Nuthak)