Just updated to include Mount Polley from http://www.wise-uranium.org/mdaf.html(from 1960 – last updated 6 Aug 2014)  Date Location Parent company Ore type Type of Incident Release Impacts 2014, Aug. 4 Mount Polley mine, near Likely, British Columbia, Canada Imperial Metals Corp. copper, gold tailings dam failure 4.5 million m3 of...