Quincy Mining Company Stamp Mills Historic District - Credit: Wikimedia Commons
The Quincy Mining Company Stamp Mills Historic District is a historic stamp mill (used to crush copper-bearing rock, separating the copper ore from surrounding rock) located on M-26 near Torch Lake, just east of Mason in Osceola Township. It was listed on the National Register of Historic Places in 2007. Read more on Wikipedia
Source: en.wikipedia.org