Hull-Rust-Mahoning Open Pit Iron Mine - Credit: Wikimedia Commons
Hull-Rust-Mahoning Open Pit Iron Mine - Credit: Wikimedia Commons
The Hull–Rust–Mahoning Open Pit Iron Mine in Hibbing, Minnesota, United States, is the largest operating open-pit iron mine in Minnesota. The pit stretches more than long, wide, and deep. It was established in 1895 and was one of the world's first mechanized open-pit mines. With Read more on Wikipedia
Source: en.wikipedia.org