{"nrhp_refnum":"91001126","name":"Lackawanna Iron and Coal Company Furnace","other_names":["Lackawanna Iron &amp","Steel Co.","Scranton Iron Furnaces"],"category":"structure","location":{"address":"159 Cedar Ave.","address_restricted":false,"city":"Scranton","county":"Lackawanna County","state":"PA","lat":41.40457004900003,"lon":-75.66211149399999,"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":"Four connected stone blast furnace stacks in downtown Scranton, Lackawanna County, Pennsylvania, set into a hillside beside Roaring Brook. The stacks were built between 1848 and 1857 by the Lackawanna Iron and Coal Company.","why_significant":"The nomination argues the furnaces represent an important statewide industry, the anthracite iron and rail production that supplied railroads, and that the complex is unusual engineering because the furnaces were linked in a serial arrangement to share hot blast equipment. Only these linked furnaces remain intact. The individual furnaces are comparable to other anthracite furnaces, so the distinction lies in the complex's configuration.","narrative":"Four stone blast furnaces stand in a row on a hillside above Roaring Brook in downtown Scranton, Pennsylvania. The two eastern stacks were built around 1848 and 1849, and the third and fourth were added about 1852 and 1857. Each stack is about 40 feet high, and the masonry arches that join them share hot blast equipment, a linked arrangement that is rare and that the complex is valued for. The furnaces opened under William Henry's direction in the 1840s and became part of the Lackawanna Iron and Coal Company, which later produced T rails for railroads, including the New York and Erie. Most of the surrounding ironworks was dismantled in 1903 and 1904, leaving the stone stacks as the surviving remnant of the operation. The furnaces were stabilized in 1969 and are now administered as a public site.","period_of_significance":"1848-1903","architect_builder":null,"architectural_style":null,"criteria":["A","C"],"status_note":"The furnace stacks were stabilized in 1969 and later acquired by the Commonwealth of Pennsylvania; a visitors facility, pavilion, parking and interpretive signs were added.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.025947-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/91001126.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/91001126/adc76167cb-800.webp","url_1600":"https://nationalhistoricalregister.com/media/91001126/adc76167cb-1600.webp","licence":"CC BY-SA 4.0","author":"Rolfmueller","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Scranton_iron_furnaces_2008_03_23.jpg\" rel=\"noopener\">Rolfmueller</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Scranton_iron_furnaces_2008_03_23.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993119","wikipedia":"https://en.wikipedia.org/wiki/Scranton_Iron_Furnaces","wikidata":"https://www.wikidata.org/wiki/Q7438748"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lackawanna-county/lackawanna-iron-and-coal-company-furnace-91001126/"}