Tilly Foster Mine
E262835
Tilly Foster Mine is a historic iron ore mine in Putnam County, New York, noted for its rich mineral deposits and role in the region’s 19th-century mining industry.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tilly Foster Mine canonical | 2 |
| Tilly Foster Mine site | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2401200 — 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: Tilly Foster Mine Context triple: [Tilly Foster, knownFor, Tilly Foster Mine]
-
A.
Kennedy Mine
Kennedy Mine is a historic hard-rock gold mine in California that was once one of the deepest and most productive gold mines in North America.
-
B.
North Star Mine
North Star Mine is a historic gold mine and landmark in Grass Valley, California, that played a significant role in the region’s 19th- and early 20th-century mining industry.
-
C.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
-
D.
El Teniente mine
El Teniente mine is one of the world’s largest underground copper mines, located in central Chile and operated by the state-owned company Codelco.
-
E.
Geita Gold Mine
Geita Gold Mine is one of Tanzania’s largest open-pit gold mines, operated by AngloGold Ashanti and located near the town of Geita in the country’s northwest.
- 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: Tilly Foster Mine Target entity description: Tilly Foster Mine is a historic iron ore mine in Putnam County, New York, noted for its rich mineral deposits and role in the region’s 19th-century mining industry.
-
A.
Kennedy Mine
Kennedy Mine is a historic hard-rock gold mine in California that was once one of the deepest and most productive gold mines in North America.
-
B.
North Star Mine
North Star Mine is a historic gold mine and landmark in Grass Valley, California, that played a significant role in the region’s 19th- and early 20th-century mining industry.
-
C.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
-
D.
El Teniente mine
El Teniente mine is one of the world’s largest underground copper mines, located in central Chile and operated by the state-owned company Codelco.
-
E.
Geita Gold Mine
Geita Gold Mine is one of Tanzania’s largest open-pit gold mines, operated by AngloGold Ashanti and located near the town of Geita in the country’s northwest.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
iron ore mine ⓘ |
| closed |
around 1916
ⓘ
early 20th century ⓘ |
| commodity | iron ⓘ |
| country | United States of America ⓘ |
| currentStatus | abandoned mine ⓘ |
| currentUse | historic and recreational area vicinity ⓘ |
| depth | over 600 feet ⓘ |
| discovered | early 19th century ⓘ |
| geologicalSetting | Hudson Highlands metamorphic terrane ⓘ |
| hazard |
flooded underground workings
ⓘ
unstable mine openings ⓘ |
| historicalPeriodOfActivity |
early 20th century
ⓘ
late 19th century ⓘ mid-19th century ⓘ |
| knownFor |
19th-century iron mining
ⓘ
diverse mineral specimens ⓘ rich mineral deposits ⓘ |
| locatedIn |
New York State
ⓘ
linked to:
New York
Putnam County, New York ⓘ Town of Southeast, New York ⓘ |
| locatedNear | Tilly Foster Farm Museum ⓘ |
| mineral |
allanite-(Ce)
ⓘ
apatite ⓘ calcite ⓘ chalcocite ⓘ chalcopyrite ⓘ danburite ⓘ epidote ⓘ hedenbergite ⓘ magnetite ⓘ prehnite ⓘ pyrite ⓘ pyrrhotite ⓘ quartz ⓘ sphalerite ⓘ tremolite ⓘ |
| namedAfter | Tilly Foster ⓘ |
| near |
Brewster, New York
ⓘ
Croton Falls, New York ⓘ |
| opened | circa 1850s ⓘ |
| oreType | magnetite iron ore ⓘ |
| partOf | Hudson Highlands iron mining district ⓘ |
| region |
Lower Hudson Valley
ⓘ
linked to:
Hudson Valley
|
| significance |
important regional iron producer in 19th century
ⓘ
noted mineral collecting locality ⓘ |
| transportConnection | New York and Harlem Railroad ⓘ |
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: Tilly Foster Mine Description of subject: Tilly Foster Mine is a historic iron ore mine in Putnam County, New York, noted for its rich mineral deposits and role in the region’s 19th-century mining industry.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tilly Foster Mine