Located in a town of the same name in Minnesota, what mine was once the world's biggest iron ore deposit?

Mountain Iron Mine is a defunct mine located in Mountain Iron, Minnesota. It was the first mine on the Mesabi Range, and the world's biggest iron ore deposit when first established. Although the site has been dormant since 1956, it was designated a National Historic Landmark in 1968.

Asked by Vasilii Kulev · Last updated 4 years ago · 5.1K views · SOURCE