It wasn't until the Duluth, Missabe, and Northern Railroad (DM&N) linked the Mesabi Range to docks in Duluth Harbor that mining could begin in earnest. Iron ore was discovered on the three iron ranges at different times. In 2010 a new plant began production of 97% iron nuggets. Your IP: 221.121.152.186 “The Paulson Mine,” Wikipedia. 2. It had been the lure of gold that brought prospectors to the North Country, but it would be iron ore that turned out to be far more profitable. The district is located largely in Itasca and Saint Louiscounties. Accessed 19 May 2015, http://en.wikipedia.org/wiki/Gunflint_Range. 1. The Mesabi Iron Range wasn’t the first iron range to be mined in Minnesota, but it has arguably been the most prolific. By the 1920's most of the underground operations had been closed or modified to open pits. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. These 12 Rare Photos Show Minnesota’s Mining History Like Never Before 1. These cherty iron ore deposits are Precambrian in age for the Vermilion Range, while middle Precambrian in age for the Mesabi and Cuyuna ranges, all in Minnesota. Richard W. Ojakangas and Charles L. Matsch, “Minnesota’s Geology,” (Minneapolis: University of Minnesota Press, 2001).
The Mesabi Iron Range is a mining district in northeastern Minnesota following an elongate trend containing large deposits of iron ore. A new chapter in the history of the Mesabi Range is currently unfolding. History of the Mesabi Range (through 1922),”. The taconite process was developed by Professor E. W. Davis of the University of Minnesota Mines Experiment Station. Despite the word "range", the iron ranges are not mountain chains, but outcrops of Precambrian sedimentary formations containing high percentages of iron. Performance & security by Cloudflare, Please complete the security check to access. "The Cuyuna iron range in east-central Minnesota is unique in the Lake Superior region because of its large manganiferous iron-ore resources. The largest and most productive Range began shipments in 1892 from the Mountain Iron Mine. CLICK HERE TO RETURN TO THE CHISHOLM CONFERENCE. Mesabi is the Ojibwa word for "Giant". Several taconite mines and processing facilities are currently operating on the Mesabi Range. As it turned out, the iron would become more valuable to northern Minnesota than the gold. Accessed 19 May 2015, http://zenithcity.com/zenith-city-history-archives/minnesotas-arrowhead/history-of-the-mesabi-iron-range. The Soudan Mine was nearly 1/2 mile underground and now hosts the Tower Soudan State Park along with the University of Minnesota's High Energy Physics Lab. 1.

It has been extensively worked since 1892, and has seen a transition from high-grade direct shipping ores through gravity conc… The deposit is on the west end of Gunflint Lake in Cook County, MN, and extends into Ontario for a total length of 32 km. Minnesota's iron ore was actually discovered while miners were on their way to seek gold. Iron ore … From 1901 until the end of active mining in 1962, the Soudan Mine was owned by the United States Steel Corporation's Oliver Iron Mining division. The cherts (i.e. • In the late 19th century, prospectors searching for gold in northern Minnesota discovered extremely rich veins of hematite at this site, often containing more than 65% iron. Accessed 19 May 2015, https://archive.org/details/mesabiironbearin00leit. These iron minerals are typically mixed with clay, sand, rock or gravel, making iron a very common mineral – common enough to be found in your backyard. (2)  Average dry iron grades ranged from 55% to over 62%. Peter McSwiggen and Jane Cleland, “History of the Cuyuna Range,” Minnesota Geological Survey. The Mesabi Range began in this sea, which contained concentrations of iron and silica.

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