Greenwood Furnace State Park
As the furnace fires burned, limestone separated impurities from the molten iron. Huge forests supplied wood for charcoal, a fuel that burned with intense heat.
A stream or creek provided water power to operate machinery designed to fan the charcoal fire, raising its temperature to nearly 3,000 F.
(Inscription under the image in the lower left)
Mule drawn wagons loaded ore, limestone, charcoal and pig iron.
(Inscription above the image in the upper right)
Some iron ore was found near the surface while other deposits required miners to descend into tunnels as long as 200 yards.
(Inscription under the image in the lower center)
Colliers built conical mounds of wood, then set them afire.
(Inscription under the image in the lower right)
A controlled slow-burning fire changed wood into charcoal.
Erected by Pennsylvania Bureau of State Parks.
Location. 40° 39.116′ N, 77° 45.201′ W. Marker is in Huntingdon, Pennsylvania, in Huntingdon County. Marker is
Other nearby markers. At least 8 other markers are within walking distance of this marker. The Worker’s Pyramid (here, next to this marker); From Mineral To Metal (a few steps from this marker); An Undeniable Presence (a few steps from this marker); An Industry in Ruins (a few steps from this marker); The “Best” Iron (a few steps from this marker); Greenwood Furnace (within shouting distance of this marker); Blacksmith & Wagon Shop (about 500 feet away, measured in a direct line); Northern Water Snakes (approx. ¼ mile away). Touch for a list and map of all markers in Huntingdon.
Categories. • Industry & Commerce •
Credits. This page was last revised on June 16, 2016. This page originally submitted on November 21, 2015, by Don Morfe of Baltimore, Md 21234. This page has been viewed 106 times since then and 17 times this year. Photos: 1, 2, 3. submitted on November 21, 2015, by Don Morfe of Baltimore, Md 21234. • Bill Pfingsten was the editor who published this page.