Denison Mines
E512254
Denison Mines is a Canadian uranium mining company historically known for its major operations in Ontario and its role as a significant producer in the global nuclear fuel industry.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Denison Mine (joint operations region) | 1 |
| Denison Mines canonical | 1 |
| Denison Mines Corp. | 1 |
| Denison Mines Inc. | 1 |
| Denison Mines Limited | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5322256 — 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: Denison Mines Context triple: [Elliot Lake, formerMajorEmployer, Denison Mines]
-
A.
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.
-
B.
Tilly Foster Mine
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.
-
C.
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.
-
D.
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.
-
E.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
- 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: Denison Mines Target entity description: Denison Mines is a Canadian uranium mining company historically known for its major operations in Ontario and its role as a significant producer in the global nuclear fuel industry.
-
A.
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.
-
B.
Tilly Foster Mine
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.
-
C.
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.
-
D.
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.
-
E.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
mining company
ⓘ
public company ⓘ uranium mining company ⓘ |
| businessActivity |
uranium development
ⓘ
uranium exploration ⓘ uranium processing interests ⓘ uranium production ⓘ |
| country | Canada ⓘ |
| focusRegion |
Athabasca Basin, Saskatchewan, Canada
ⓘ
linked to:
Athabasca Basin
|
| foundedAs |
Denison Mines Limited
ⓘ
linked to:
Denison Mines
|
| hasOperation |
McClean Lake uranium project
ⓘ
Wheeler River uranium project ⓘ |
| hasProject |
Gryphon uranium deposit
ⓘ
Phoenix uranium deposit ⓘ |
| hasSubsidiaryOrAffiliate |
Denison Mines Inc.
ⓘ
linked to:
Denison Mines
|
| headquartersLocation |
Toronto, Ontario, Canada
ⓘ
linked to:
Toronto
|
| historicalOperationRegion |
Ontario, Canada
ⓘ
linked to:
Ontario
|
| historicalSignificance | major uranium producer in Canada ⓘ |
| industry |
nuclear fuel
ⓘ
uranium mining ⓘ |
| listedAs |
Denison Mines Corp.
ⓘ
linked to:
Denison Mines
|
| ownsStakeIn | McClean Lake mill ⓘ |
| primaryCommodity | uranium ⓘ |
| productUsedFor | nuclear power generation ⓘ |
| roleInIndustry | significant producer in the global nuclear fuel industry ⓘ |
| stockExchange |
NYSE American
ⓘ
Toronto Stock Exchange ⓘ |
| tickerSymbol |
DML
ⓘ
DNN ⓘ |
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: Denison Mines Description of subject: Denison Mines is a Canadian uranium mining company historically known for its major operations in Ontario and its role as a significant producer in the global nuclear fuel industry.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Denison Mines
linked to: Denison Mines
linked to: Denison Mines
linked to: Denison Mines