Mount Etna Iron Works, Mule Barn, East of U.S. Route 22 on T.R. 463, Williamsburg, Blair County, PA
Significance: Mt. Etna Iron Works was one of numerous of charcoal iron producers in the nationally renowned Juniata Iron region. This region was a leading producer of pig iron in the antebellum years. Mt. Etna retains a number of structures associated with this iron production. A number of residences and the company store, all related to the iron plantation, remain extant.
Unprocessed Field note material exists for this structure: FN-32
Unprocessed Field note material exists for this structure: N1265
Survey number: HAER PA-224-J