{"nrhp_refnum":"100004180","name":"Vulcan Mine Historic District","other_names":["Ca-Sbr-03065"],"category":"district","location":{"address":"5.28 mi, E. of Kelbaker Rd., on Vulcan Mine Rd.","address_restricted":false,"city":"Kelso","county":"San Bernardino County","state":"CA","lat":34.98041392850004,"lon":-115.6482467494508,"geom_source":"nps_gis"},"listed_date":"2019-07-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Military"],"significance_levels":["local"],"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/california/san-bernardino-county/vulcan-mine-historic-district-100004180/"}