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The Duluth Ship Canal is an artificial canal 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.
Along the eastern edge of the region are the Dalles of the St. Croix River, a deep gorge cut by runoff from Glacial Lake Duluth into ancient bedrock. [48] Interstate Park here contains the southernmost surface exposure of the Precambrian lava flows of the Midcontinent Rift, providing a glimpse of Minnesota's volcanic past. [49]
Duluth is on the north shore of Lake Superior at the westernmost point of the Great Lakes. It is the largest metropolitan area, the second-largest city, and the largest U.S. city on the lake. Duluth is accessible to the Atlantic Ocean, 2,300 miles (3,700 km) away, via the Great Lakes Waterway and St. Lawrence Seaway. [9]
The primary underground mining method used was known as cut and fill. This involved mining the ceiling and using Ely Greenstone and other waste rock to artificially raise the floor at the same rate as the ceiling was being mined out. As a result, the floor and ceiling were always 10–20 feet (3–6 m) apart.
The Duluth Complex includes much of Minnesota's Arrowhead Region north of Lake Superior.From the west near Duluth, Minnesota, it arcs north and northeast to about 48° north latitude south of Knife Lake, proceeds east at that latitude some five to twenty kilometers distant from and south of the Canada–US border to about 90° west longitude where it joins the border at the Pigeon River, and ...
Oct. 27—DULUTH — Here's the News Tribune's annual list of venison processors provided as a service to hunters. Note that some possessors do the entire skinning and butchering work, while some ...
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The deep basin gouged by the ice filled with meltwater around 12,000 years ago as Lake Duluth. Since the eastern shore was formed by the towering wall of the ice sheet, the lake was 500 feet (150 m) higher than modern Lake Superior.