California State Mining And Mineral 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 home and engine home were built on the https://ericku3e2v.dbblog.net/34535233/gas-detector