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Coppertown Mining Museum In 1877, Iron Cliffs began exploratory drilling on this web site overlooking Ishpeming. Drilling uncovered iron ore, and in 1879 the company opened the Cliffs Shaft, then generally known as the "New Barnum". A new boiler house and engine home were built on the positioning in https://2040504.elbloglibre.com/5891868/what-are-some-of-the-causes-of-msds


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