Grain silos and rusty ships from the 1950s remain from a bygone ... "There is an opportunity on the Great Lakes and the inland river system to increase shipping." Joseph Schwieterman, director ...

Global shipping companies were among the first to spot the Great Lakes' potential ... the Port of Duluth-Superior was at its peak in the 1950s, when it handled about 70 million tonnes of goods ...

Grain silos and rusty ships from the 1950s remain from a bygone era when ... environmental activists say expanding Great Lakes shipping poses other concerns. "The lakes have just been ravaged ...

Grain silos and rusty ships from the 1950s remain from a bygone era when massive amounts ... environmental activists say expanding Great Lakes shipping poses other concerns. "The lakes have just been ...