In 10 years time, the Lake Mine in Ontonagon County, Michigan produced 7.3 million pounds of copper. Here's a look inside this abandoned mine in the Upper Peninsula.
In 10 years time, the Lake Mine in Ontonagon County, Michigan produced 7.3 million pounds of copper. Here's a look inside this abandoned mine in the Upper Peninsula.
It wasn't known as one of our most productive mines, but it managed to last forty years. Here's info, location, and photos of the Arnold Mine ruins in the Keweenaw Peninsula, Michigan.