While I was going to write something more first person about this place's history I gave up and said screw it because the below blurb from their website is an excellent condensed history of what transpired here and why this site still matters in a historical context.
"Cornwall Iron Furnace is an extraordinary example of the furnaces that dotted the Pennsylvania countryside in the 18th and 19th centuries. Around it developed villages, artisans' shops, stores, schools, churches, and the home of a wealthy ironmaster. All of the raw materials necessary for the smelting process -- iron ore, limestone and wood for charcoal were found in this self contained iron plantation. Cornwall Iron Furnace, the only surviving intact charcoal cold blast furnace in the Western Hemisphere, attests to the once great iron industry that flourished in south central Pennsylvania.
In the 1730s, Peter Grubb, a stone mason, began mining nearby. In 1742, he established the furnace. He named the area Cornwall in honor of the area in England from where his father had emigrated. This furnace remained in operation until 1883.
Although the British Parliament attempted in 1750 to restrict production of iron in the colonies, the output continued to rise. The American colonies, with Pennsylvania being the top producer, smelted one-seventh of the world's iron.
When Peter died in 1754, the property passed to his sons, Curttis and Peter. By 1798, Robert Coleman had gained control of the furnace operation. Robert was very successful and became one of Pennsylvania's first millionaires. Cornwall Iron Furnace remained in operation until 1883, when newer furnace operations fueled by anthracite coal made it obsolete. The furnace was abandoned, leaving the building virtually untouched until it was given in 1932 to the Commonwealth of Pennsylvania by Margaret Coleman Freeman Buckingham, Robert's great grand-daughter.
In the mid-nineteenth century, Cornwall's iron plantation contained industrial, residential, and agricultural activities. Small villages were created for furnace workers and miners. These stone and brick structures were simple in style but sturdy in construction. Many other structures built during this time period use a Gothic Revival architectural style.
The ore mine, which continued to operate until 1973, is located just south of the furnace property. Bethlehem Steel acquired ownership of the mine between 1917 and 1922. Both strip mining and underground mining were used to extract ore from the ground. The open pit mine began to flood in 1972, and today the open pit is filled with water."
If you go:
The furnace is open for tours Thursday through Saturday from 9-5 and Sunday from 12-5 with the last tour beginning at 3:15 pm each day. Adult admission is $8.00, kids (3-11) $4.00 and seniors/AAA members $7.00 unless you're a PHMC member then it's free.
There are set times for when tours begin. Their website does not list them and I forget when they start but there is a sign on the desk in the visitor center/gift shop. The tour we took lasted around forty-five minutes and that does not include the NPS style video that takes an additional twenty or so minutes and ideally should be seen before the tour starts.
Two things worth noting:
Number one would be the visitor center/gift shop. The building for this is the old charcoal barn. It's huge and looks amazing. Inside they have a space where the movie is shown, restrooms, various displays and tons of things for sale up to an entire repertoire of cast iron pans.
Two is that if you've even been to Hopewell Furnace, which is about an hour east of Cornwall, know that a lot of what you're looking at there is some form of reproduction/the NPS's best interpretation of how things looked/were done. What you're getting with Cornwall is the real deal more or less left in state. This the only 19th century charcoal fueled blast furnaces (out of hundreds if not more) to survive fully intact. While the site does not have Hopewell's square footage what is does offer is to me a far better experience in terms of interpreting/explaining the mining, charcoal making, and iron making process that went on to make Cornwall what it was. read more