We're spending today and tomorrow looking at some aspects of the historical influence of mining in the Upper Peninsula, specifically in the Ironwood area. Today we'll be answering a listener question. Tomorrow, we'll be remembering Andrew Carnegie and his influence in Ironwood ahead of the 100th anniversary of his death. ( Listen to Part Two about the significance of Andrew Carnegie in the Ironwood area here. ) The question we're answering today was submitted during our Curious North road trip