Mine: Corey "40" Mine, Stambaugh, MI
Berkshire Mine → Corey "40" Mine → Became
Location: NE-SW Sec. 6 of T42N-R34W
Owned by: Brule Mining Co. (Oglebay, Norton & Co. agent)
Produced: Iron Ore, soft, red, high phosphorus.
Method: Underground, by stoping method. Depth: 400 feet.
Railroad connection: C&NW to Escanaba docks.
Lifetime Production: 67,616 tons between 1922-1928 (included in Berkshire shipments)