Leila Saberi, University of Minnesota Twin Cities, Department of Earth Sciences, Minneapolis, MN, United States, G. H. Crystal Ng, University of Minnesota, Twin Cities, Department of Earth Science, Minneapolis, MN, United States, Leah Nelson, University of Minnesota Twin Cities, Earth Sciences, Minneapolis, United States, Wei Zhi, Pennsylvania State University Main Campus, Department of Energy and Mineral Engineering, University Park, PA, United States, Jeff La Frenierre, Gustavus Adolphus College, Saint Peter, MN, United States and Li Li, Pennsylvania State University Main Campus, Department of Civil and Environmental Engineering, University Park, PA, United States