Cliffs Shaft Mine Museum In 1877, Iron Cliffs started exploratory drilling on this website overlooking Ishpeming. Drilling uncovered iron ore, and in 1879 the company opened the Cliffs Shaft, then often known as the "New Barnum". A new boiler house and engine home have been constructed on the location https://jaredkh43z.blogdomago.com/6796031/workplace-stretching