Duluth is a port city in the U.S. state of Minnesota and the county seat of St. Louis County. Located on Lake Superior in Minnesota's Arrowhead Region, the city is a hub for cargo shipping. Commodities shipped from the Port of Duluth include coal, iron ore, grain, limestone, cement, salt, wood pulp, steel coil, and wind turbine components. Duluth is south of the Iron Range and the Boundary Waters Canoe Area Wilderness.
St. Louis County is a county located in the Arrowhead Region of the U.S. state of Minnesota. As of the 2020 census, the population was 200,231. Its county seat is Duluth. It is the largest county in Minnesota by land area, and the largest in the United States by total area east of the Mississippi River. St. Louis County is included in the Duluth, MN–Superior, WI Metropolitan Statistical Area.
Duluth Township is a township in Saint Louis County, Minnesota, United States. The population was 1,941 at the 2010 census.
Ely is a city in Saint Louis County, Minnesota, United States. The population was 3,268 at the 2020 census.
Brimson is an unincorporated community in Ault Township, Saint Louis County, Minnesota, United States.
Rollins is an unincorporated community in Ault Township, Saint Louis County, Minnesota, United States.
The Iron Range is collectively or individually a number of elongated iron-ore mining districts around Lake Superior in the United States and Canada. Much of the ore-bearing region lies alongside the range of granite hills formed by the Giants Range batholith. These cherty iron ore deposits are Precambrian in the Vermilion Range and middle Precambrian in the Mesabi and Cuyuna ranges, all in Minnesota. The Gogebic Range in Wisconsin and the Marquette Iron Range and Menominee Range in Michigan have similar characteristics and are of similar age. Natural ores and concentrates were produced from 1848 until the mid-1950s, when taconites and jaspers were concentrated and pelletized, and started to become the major source of iron production.
The Midcontinent Rift System (MRS) or Keweenawan Rift is a 2,000 km (1,200 mi) long geological rift in the center of the North American continent and south-central part of the North American plate. It formed when the continent's core, the North American craton, began to split apart during the Mesoproterozoic era of the Precambrian, about 1.1 billion years ago. The rift failed, leaving behind thick layers of igneous rock that are exposed in its northern reaches, but buried beneath later sedimentary formations along most of its western and eastern arms. Those arms meet at Lake Superior, which is contained within the rift valley. The lake's north shore in Ontario and Minnesota defines the northern arc of the rift. From the lake, the rift's eastern arm trends south to central lower Michigan, and possibly into Indiana, Ohio, Kentucky, Tennessee, and Alabama. The western arm runs from Lake Superior southwest through portions of Wisconsin, Minnesota, Iowa, and Nebraska to northeastern Kansas, and possibly into Oklahoma.
Markham is an unincorporated community in Colvin Township, Saint Louis County, Minnesota, United States.
Cotton is an unincorporated community in Cotton Township, Saint Louis County, Minnesota, United States.
Canyon is an unincorporated community in Northland Township, Saint Louis County, Minnesota, United States.
Independence is an unincorporated community in New Independence Township, Saint Louis County, Minnesota, United States.
Kabetogama is an unincorporated community in Kabetogama Township, Saint Louis County, Minnesota, United States, located within the Kabetogama State Forest.
Bengal was an unincorporated community on the boundary of Itasca County and Saint Louis County, Minnesota, United States, located about three hours north of Minneapolis. Bengal was also previously known as Powers.
Culver is an unincorporated community in Saint Louis County, Minnesota, United States.
Celina was an unincorporated community in Saint Louis County, Minnesota, United States. The early 20th century community was once home to a Lutheran church, post office, and general stores. The village was located near Greaney and Bear River, Minnesota.
Palmers is an unincorporated community in Duluth Township, Saint Louis County, Minnesota, United States; located on the North Shore of Lake Superior.
In the United States, copper mining has been a major industry since the rise of the northern Michigan copper district in the 1840s. In 2017, the US produced 1.27 million metric tonnes of copper, worth $8 billion, making it the world's fourth largest copper producer, after Chile, China, and Peru. Copper was produced from 23 mines in the US. Top copper producing states in 2014 were Arizona, Utah, New Mexico, Nevada, and Montana. Minor production also came from Idaho, and Missouri. As of 2014, the US had 45 million tonnes of known remaining reserves of copper, the fifth largest known copper reserves in the world, after Chile, Australia, Peru, and Mexico.
Clover Valley is an unincorporated community in Duluth Township, Saint Louis County, Minnesota, United States.
