Fillers dumped alternating layers of charcoal fuel, iron ore and limestone flux into the top of the furnace. As the charcoal burned, air forced into the furnace from the outside raised the temperature to 2,000-3,000 F. creating several byproducts. Carbon gases escaped up the furnace stack, molten iron sank to the bottom and impurities called slag floated on the liquified metal. Workers drew off the useless slag and guttermen channeled the iron into connected castings called pigs.
Erected by Department of Conservation and Natural Resources, Pennsylvania Bureau of State Parks.
Location. 39° 54.4′ N, 77° 28.667′ W. Marker is in Fayetteville, Pennsylvania, in Franklin County. Marker can be reached from Pine Grove Road. Touch for map. Marker is in this post office area: Fayetteville PA 17222, United States of America.
Other nearby markers. At least 8 other markers are within 5 miles of this marker, measured as the crow flies. Basic Ingredients (here, next to this marker); The Workers Pyramid
More about this marker. The marker is near the Caledonia Furnace in Caledonia State Park.
Categories. • Industry & Commerce •
Credits. This page was last revised on July 7, 2017. This page originally submitted on July 5, 2017, by Larry Gertner of New York, New York. This page has been viewed 104 times since then. Photos: 1, 2, 3, 4. submitted on July 5, 2017, by Larry Gertner of New York, New York. • Bill Pfingsten was the editor who published this page.