Built in 1846 by John Campbell and others, the Mt. Olive Charcoal Iron Furnace produced 16 tons of pig iron per day. A wooden casting house extended from the front of the stack, a charging house sat above the stack, and a steam engine house sat to the left of the stack. The grounds once included a blacksmith shop, stock yard, hot blast system, and ore burners. It was listed on the National Register of Historic Places and was an integral stop on the Underground Railroad.