Mine: Knowlton Mine, Greenland, MI

A long line of pits was found along the outcrop of the Knowlton by the first whit men to visit the property. In the Greenland-Rockland district in Ontonagon County.

Open pits found → Knowlton Mine → Adventure Mine

Opened: 1853

Method: Open pits + three shafts sunk to 10', 240' and 220' respectively. [CHBK]