Federal Yoshino, left, travels near a U.S. Army Corps of Engineers boat in the Duluth-Superior harbor Tuesday, April 8.

Each year, commercial shipping through the Port of Duluth-Superior generates more than $1 billion in business revenue and contributes more than $240 million in federal and state tax revenue. It ...

A rite of passage to experience in one’s lifetime, Duluth, Minnesota, is an iconic port city visited ... the giant cargo ...