{"nrhp_refnum":"91001133","name":"Carrick Furnace","other_names":[],"category":"site","location":{"address":"PA 75 N of Metal, Metal Township","address_restricted":false,"city":"Metal","county":"Franklin County","state":"PA","lat":40.01890183100005,"lon":-77.87628670199996,"geom_source":"nps_gis"},"listed_date":"1991-09-06","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"Carrick Furnace is a stone iron furnace complex in Metal Township, Franklin County, Pennsylvania, located just north of the town of Metal in the Path Valley. The site includes the limestone furnace stack, a Weimer blowing engine, boilers, and foundations of associated structures.","why_significant":"The nomination argues the furnace is significant under Criterion A for industry, as part of the North Mountain iron producing area and the westward movement of the industry in Pennsylvania. It is significant under Criterion C for engineering because of its well-preserved furnace and its example of converting a charcoal furnace to hot blast, with the Weimer blowing engine described as the only one extant in Pennsylvania.","narrative":"Carrick Furnace is a limestone iron furnace in Metal Township, Franklin County, set in a grassy field west of Route 75. Samuel Dunn built it around 1828 on 204 acres he had bought in 1826, naming it after his ancestral homestead in Ireland. The furnace produced about thirty-five tons of pig iron a week and was briefly suspended after the panic of 1837. In 1879 its water-driven bellows were replaced by a steam-powered blowing engine made by Weimer Brothers of Lebanon, converting the furnace to hot blast. The blowing engine, inscribed with the 1879 date, retains its cylinders and flywheels and is regarded as the only one of its kind still in place in Pennsylvania. The furnace operated intermittently until 1884. In 1935 the furnace and just over an acre were given to the Kittochtinny Historical Society by the heirs of Hugh M. North.","period_of_significance":"1828-1884","architect_builder":null,"architectural_style":null,"criteria":["A","C"],"status_note":"The furnace went out of blast in 1884; the hot blast stove fell from the stack in 1948 and was apparently sold for scrap; the steam engine is not extant.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.052815-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/91001133.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/91001133/f9d40e73f4-800.webp","url_1600":"https://nationalhistoricalregister.com/media/91001133/f9d40e73f4-1600.webp","licence":"CC0","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Carrick_Furnace_FrankCo_PA_2.JPG\" rel=\"noopener\">Smallbones</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Carrick_Furnace_FrankCo_PA_2.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992963","wikipedia":"https://en.wikipedia.org/wiki/Carrick_Furnace","wikidata":"https://www.wikidata.org/wiki/Q5046140"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/franklin-county/carrick-furnace-91001133/"}