Madsen Mine
Ontario, Canada
The Madsen Mine is a Canadian underground gold mine, currently owned by West Red Lake Gold Mines. In May 2025, the mine re-opened and began production. The mine was also previously operational from: 1938 to 1976; 1997 to 1999; and 2021 to 2022.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).