Great Lakes freighters may have to treat ballast water
By Jim Malewitz of Bridge Magazine and Sarah Whites-Koditschek of Wisconsin Public Radio
MADISON, Wis. (AP) — More than $375 billion in cargo — iron ore, coal, cement, stone, grain and more — has flowed between Great Lakes ports and foreign nations since 1959. That is when Queen Elizabeth and U.S. President Dwight Eisenhower christened the St. Lawrence Seaway, heralding it as an engineering marvel.
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