MDAG.com Internet Case Study #16: Sulphide Oxidation and Metal Leaching in Permafrost Areas of Greenland and Canada Page 1 Internet Case Study #16:

• Main Authors: Sulphide Oxidation, Metal Leaching, Kevin A. Morin, Nora M. Hutt, This Internet
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Arctic; Canada; Greenland; permafrost
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.603.5650; http://www.mdag.com/case_studies/mdag case study 16.pdf

Regions of continuous permafrost in the High Arctic are sometimes assumed to be free of risk for acidic drainage and significant metal leaching. Such assumptions arise from the expectation that freezing conditions will halt oxidation and associated reactions. However, laboratory and field studies have shown for decades that significantly acidic drainage arises in the High Arctic. This Internet Case Study summarizes two recent studies to complement the findings of several others.