{"nrhp_refnum":"100001250","name":"Experimental and Safety Research Coal Mines","other_names":["Experimental Mine, U.S. Bureau of Mines (Additional Documentation)"],"category":"structure","location":{"address":"W. side of Cochran Mill Rd. 2 mi. S. of Bruceton","address_restricted":false,"city":"South Park Township","county":"Allegheny County","state":"PA","lat":40.303521000000046,"lon":-79.98069880559692,"geom_source":"nps_gis"},"listed_date":"2017-06-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Science","Education","Engineering"],"significance_levels":["national"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/pennsylvania/allegheny-county/experimental-and-safety-research-coal-mines-100001250/"}