State Historic Marker Dedication
- Date: December 11, 2011
- Time: 2:00pm
- Location: Fort Gratiot County Park, 3325 Metcalf Road, Fort Gratiot, MI 48059
- A new state historical marker recognizing the December 11,1971 tunnel explosion will be dedicated on the 40th anniversary of the historic tragedy. An official from the Michigan Historical Commission will be at Fort Gratiot County Park to formally dedicate the marker.
