{"nrhp_refnum":"02001406","name":"Phillips Brothers Mill","other_names":[],"category":"district","location":{"address":"Approx. 30 mi. NE of Redding","address_restricted":false,"city":"Oak Run","county":"Shasta County","state":"CA","lat":40.72267649200006,"lon":-121.986021645,"geom_source":"nps_gis"},"listed_date":"2002-12-02","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Industry"],"significance_levels":["state"],"summary":{"what_it_is":"A 7.5-acre steam-powered sawmill and box factory complex near Oak Run, about 30 miles northeast of Redding in Shasta County, California. The mill was started in 1933 by the Phillips family and includes 17 contributing buildings and 3 structures.","why_significant":"The nomination argues the mill is an excellent example of small, limited-production steam sawmills that operated from the late 1800s through the Great Depression across the inland pineries. It claims to be the only steam mill in the United States still doing production work with machinery dating to the late 19th and early 20th centuries. It is significant under Criterion A in the areas of Engineering and Industry.","narrative":"Tucked into mixed Sierra forest east of Oak Run, this 7.5-acre site is a working steam-powered sawmill and box factory built by the Phillips family. Edmund Phillips and his eight sons started the mill in 1933, supplying lumber for homes, churches, schools and bridges. World War II shut it down when the sons enlisted. Afterward four brothers reopened it and shifted to box manufacturing, a business they could run on a modest scale. The complex includes the sawmill, planing mill, machine shop, box factory, an ammonia ice plant, cabins, cookhouses and sheds, mostly of post-and-beam construction with barn-board siding and metal roofs. Thirteen steam engines drive line shafts and belts connected to machinery, much of it from the late nineteenth and early twentieth centuries. Listed for its role in industry and engineering, the mill is described as representing small steam sawmills of the Depression era and as the only steam mill of its kind still in production.","period_of_significance":"1933 - 1952","architect_builder":"Phillips Brothers","architectural_style":"No style - Folk building methods of the Great Depression and World War II","criteria":["A"],"status_note":"Still operating: the sawmill runs about 20 days a year, cutting roughly 6,000 board feet daily, with 13 steam engines powering the machinery.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:27.618701-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/02001406.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861938","wikipedia":"https://en.wikipedia.org/wiki/Phillips_Brothers_Mill","wikidata":"https://www.wikidata.org/wiki/Q85793136"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/shasta-county/phillips-brothers-mill-02001406/"}