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Sign commemorating the Ontonagon Boulder Location of Ontonagon Boulder. The Ontonagon Boulder (/ˌɒntəˈnɑːɡən ˈboʊldəɹ/, Chippewa: Misko-biiwaabik) is a 3,708-pound (1,682 kg) boulder of native copper originally found in the Upper Peninsula of Michigan, United States, and now in the possession of the Department of Mineral Sciences, National Museum of Natural History, Smithsonian ...
The Victoria Mine is the name given to a series of copper mines located in Rockland Township, Ontonagon County, in Michigan's Copper Country. It was near this location that a large piece of float copper, known as the Ontonagon Boulder, was found. The mine operated off and on from 1849 until its final closure in 1921. [1]
Michigan City Generating Station is a coal and natural gas-fired power plant located on the shore of Lake Michigan in Michigan City, Indiana. It is operated by Northern Indiana Public Service Company (NIPSCO), owned by NiSource .
Copper mining in the Upper Peninsula boomed, and from 1845 until 1887 (when it was exceeded by Butte, Montana) the Michigan Copper Country was the nation's leading producer of copper. In most years from 1850 through 1881, Michigan produced more than three-quarters of the nation's copper, and in 1869 produced more than 95% of the country's copper.
Many copper mines have existed in the Copper Country of the U.S. state of Michigan. These include both large-scale commercial ventures and small operations. These include both large-scale commercial ventures and small operations.
Hollowed Ground: Copper Mining and Community Building on Lake Superior, 1840s-1990s. Detroit: Wayne State University Press. ISBN 978-0-8143-3458-4., focuses on three companies, Calumet & Hecla, Copper Range, and Quincy, in a study of native copper mining and copper-sulfide mining on Upper Michigan's Keweenaw Peninsula. Thurner, Arthur W. (1994).
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Calumet and Hecla Mine shaft No. 2, c. 1906. The Calumet and Hecla Mining Company was a major copper-mining company based within Michigan's Copper Country.In the 19th century, the company paid out more than $72 million in shareholder dividends, more than any other mining company in the United States during that period.