An engineering firm says a part of Thunder Bay's harbour should be dredged to clean up a large toxic mess in Lake Superior.
Studies show a 20-hectare patch of mercury-contaminated sediment sits at the north edge of the harbour, and is up to four metres thick in some spots. The waste is the product of decades of industry along the lakeshore.
Consultants outlined their recommendations at a public meeting about the Lake Superior cleanup project Wednesday evening. About 30 people attended the event, which was hosted by EcoSuperior.
http://www.cbc.ca/news/canada/thunder-bay/lake-superior-toxic-sludge-should-be-removed-engineer-says-1.2665787