Works Cited B.E.
  • Power, Thomas Michael. "The Economic Role of Metal Mining in Minnesota: Past, Present, and Future." A Report Prepared for the Sierra Club and Minnesota Center for Environmental Advocacy 39 (2007).
  • Widner, Neva Ann. "Land of 10,000 Acidic Lakes? Sulfide Mining in Northeastern Minnesota." College of Saint Benedict/Saint John's University, 1 Jan. 2010. Web. 11 Feb. 2015. <http://www.csbsju.edu/Documents/Environmental Studies/curriculum/395/Widner.pdf>.
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