News Posted March 21, 2013 Share Posted March 21, 2013 Icebreaking is a crucial part of keeping commerce operating on the Great Lakes, and it's particularly key for the steel industry. In 2011, U.S. flagged freighters moved nearly 20 percent of iron ore's total annual shipped tonnage between Dec. 16 and Apr. 15, designated as the "icebreaking season."More... Link to comment Share on other sites More sharing options...
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