What century were the Leiper Canal and Duluth Ship Canal built?
Duluth Ship Canal The Duluth Ship Canal is an artificial channel cut through Minnesota Point, providing direct access to Duluth harbor from Lake Superior. Begun privately in 1871, it was put under federal supervision and maintenance several years later. It is still an important component of the harbor facilities.
Lac La Belle, Michigan Lac La Belle (French: "Lake Beautiful"), is the name given to both a lake and a small unincorporated community in Keweenaw County in the U.S. state of Michigan. The town was originally the site of a stamping plant for the copper mines of the Keweenaw, specifically the Mendota Mine and the Delaware Mine. Copper-bearing rock was transported from the mines to the stamping plant, where it was processed and loaded onto freighters. The lake is a typical "Canadian Shield" type lake averaging approximately 30 feet (9 m) deep, and empties into Lake Superior at Bete Gris, by way of both a natural channel and a dredged canal. The canal was dredged in the 1860s with funding from several copper mining companies, for use by lake freighters, carrying copper ore.