Empire Mine State Historic Park
E231758
Empire Mine State Historic Park is a preserved former gold mine in California that showcases the history and legacy of one of the state’s oldest, largest, and richest hard-rock mining operations.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Empire Mine State Historic Park canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2068615 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Empire Mine State Historic Park Context triple: [Grass Valley, hasHistoricSite, Empire Mine State Historic Park]
-
A.
Bodie State Historic Park
Bodie State Historic Park is a preserved ghost town and former gold-mining boomtown in the Sierra Nevada of California, maintained as a state historic site in arrested decay.
-
B.
Beatty Historic Mining District
The Beatty Historic Mining District is a historic area in Nevada known for its early 20th-century gold and silver mining operations and associated boomtown heritage.
-
C.
Railtown 1897 State Historic Park
Railtown 1897 State Historic Park is a California state park and historic railroad facility preserving vintage trains, a roundhouse, and film-famous locomotives from the Sierra Railway.
-
D.
Fort Churchill State Historic Park
Fort Churchill State Historic Park is a Nevada state park preserving the ruins of a 19th-century U.S. Army fort and surrounding natural and cultural resources along the Carson River.
-
E.
Black Diamond Mines Regional Preserve
Black Diamond Mines Regional Preserve is a historic and scenic open-space park in the hills of eastern Contra Costa County, California, known for its former coal and sand mining sites, extensive trail system, and preserved cultural landscapes.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Empire Mine State Historic Park Target entity description: Empire Mine State Historic Park is a preserved former gold mine in California that showcases the history and legacy of one of the state’s oldest, largest, and richest hard-rock mining operations.
-
A.
Bodie State Historic Park
Bodie State Historic Park is a preserved ghost town and former gold-mining boomtown in the Sierra Nevada of California, maintained as a state historic site in arrested decay.
-
B.
Beatty Historic Mining District
The Beatty Historic Mining District is a historic area in Nevada known for its early 20th-century gold and silver mining operations and associated boomtown heritage.
-
C.
Railtown 1897 State Historic Park
Railtown 1897 State Historic Park is a California state park and historic railroad facility preserving vintage trains, a roundhouse, and film-famous locomotives from the Sierra Railway.
-
D.
Fort Churchill State Historic Park
Fort Churchill State Historic Park is a Nevada state park preserving the ruins of a 19th-century U.S. Army fort and surrounding natural and cultural resources along the Carson River.
-
E.
Black Diamond Mines Regional Preserve
Black Diamond Mines Regional Preserve is a historic and scenic open-space park in the hills of eastern Contra Costa County, California, known for its former coal and sand mining sites, extensive trail system, and preserved cultural landscapes.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
former gold mine
ⓘ
historic site ⓘ state park ⓘ |
| area | approximately 856 acres ⓘ |
| basedOn |
North Star Mine
ⓘ
surface form:
Empire Mine
|
| contains |
Bourn Cottage
ⓘ
Empire Mine shaft system ⓘ blacksmith shop ⓘ equestrian trails ⓘ forested hiking trails ⓘ historic gardens ⓘ interpretive trails ⓘ machine shop ⓘ mine office ⓘ mine yard buildings ⓘ museum exhibits ⓘ picnic areas ⓘ stamp mill ruins ⓘ underground mine model ⓘ visitor center ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| formerUse | hard-rock gold mining ⓘ |
| heritageDesignation |
California Historical Landmark
ⓘ
National Register of Historic Places ⓘ
surface form:
National Register of Historic Places listing
|
| inception | 1975 ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Grass Valley ⓘ Nevada County, California ⓘ |
| locatedInProtectedArea | Sierra Nevada foothills ⓘ |
| nearby |
Grass Valley, California
ⓘ
surface form:
Grass Valley downtown
Nevada City, California, United States ⓘ
surface form:
Nevada City, California
|
| offers |
educational programs
ⓘ
guided tours ⓘ living history demonstrations ⓘ self-guided tours ⓘ special events ⓘ |
| openingDate | 1975 ⓘ |
| operatedBy | California Department of Parks and Recreation ⓘ |
| partOf |
California State Park System
ⓘ
surface form:
California State Parks system
|
| preserves |
one of California’s largest hard-rock gold mines
ⓘ
one of California’s oldest hard-rock gold mines ⓘ one of California’s richest hard-rock gold mines ⓘ |
| significantPeriod |
California Gold Rush era
ⓘ
early 20th century ⓘ late 19th century ⓘ |
| subjectOf |
interpretive displays about miners’ lives
ⓘ
interpretive displays about mining technology ⓘ |
| theme |
California Gold Rush legacy
ⓘ
industrial heritage ⓘ mining history ⓘ |
| touristAttraction | yes ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Empire Mine State Historic Park Description of subject: Empire Mine State Historic Park is a preserved former gold mine in California that showcases the history and legacy of one of the state’s oldest, largest, and richest hard-rock mining operations.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.