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November 17, 2020
Two Ellicott® brand dredges were used in combination to help open the navigation channel into Grand Traverse Harbor in Michigan, a project that was completed in July 2020. The harbor was clogged with stamp sand, black and dark grey rock waste leftover from the historic processing of ore. During the 19th and 20th centuries, stamp mills on the Keweenaw Peninsula produced 25 million tons of waste, which was legally deposited near Lake Superior. Erosion and currents over the years caused the stamp sand to slowly drift south along the peninsula in Gay, Michigan, creating a black shoreline and clogs in...
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