{"nrhp_refnum":"77001158","name":"Pine Grove Furnace","other_names":["Pine Grove Ironworks"],"category":"site","location":{"address":"S of Dickinson on PA 233","address_restricted":false,"city":"Dickinson","county":"Cumberland County","state":"PA","lat":40.02986300100005,"lon":-77.30384971330459,"geom_source":"nps_gis"},"listed_date":"1977-04-13","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Historic - Non-Aboriginal","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"Pine Grove Furnace is a former charcoal iron plantation site in Dickinson, Cumberland County, Pennsylvania, now within Pine Grove Furnace State Park. It includes furnace remains, the Ege Mansion, stables, a grist mill, a church, and other ruins and buildings.","why_significant":"The nomination argues the site is significant as an iron-making operation that dates to 1764 and was part of a network of ironworks that drove regional economic growth. The Ege Mansion, built 1827-1829, is presented as an unusual and fine example of an English-style I house in Central Pennsylvania, shaped by the influence of the owner's wife.","narrative":"Pine Grove Furnace is an iron plantation in Cumberland County, Pennsylvania, established along Mountain Creek in 1764 by George Stevenson, Robert Thornburg, and John Arthur. The Ege family later came to dominate the works, and Michael Ege acquired full ownership by 1803. The furnace operated until 1895, and its machinery was sold in 1902. The site retains furnace remains, a charcoal-era stone wall, salamanders, race and wheel remains, and a steam blast engine base from the later 19th century. The Ege Mansion, built between 1827 and 1829 with on-site carpentry and brickwork, is an unusual I-house with a central hall, reflecting the influence of Jane Arthur Ege. The property is valued for its industrial remains and its architecture, and it is now part of Pine Grove Furnace State Park.","period_of_significance":"1764-1895","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Machinery was sold in 1902 and the property was acquired by the Commonwealth in 1913 as a forest reserve; the site is now part of Pine Grove Furnace State Park.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.346568-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/77001158.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/77001158/8ffed86755-800.webp","url_1600":"https://nationalhistoricalregister.com/media/77001158/8ffed86755-1600.webp","licence":"CC BY-SA 4.0","author":"Zeete","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Pine_Grove_Iron_Works,_PA_-_furnace_stack.jpg\" rel=\"noopener\">Zeete</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:Pine_Grove_Iron_Works,_PA_-_furnace_stack.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995236","wikipedia":"https://en.wikipedia.org/wiki/Pine_Grove_Iron_Works","wikidata":"https://www.wikidata.org/wiki/Q7195174"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/cumberland-county/pine-grove-furnace-77001158/"}