Great Lakes freighters may have to treat ballast water - Star Tribune
Great Lakes freighters may have to treat ballast water Star TribuneMore 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 ...
Great Lakes freighters may have to treat ballast water Star Tribune
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 ...
