Dimona reactor
E927858
The Dimona reactor is a highly secretive nuclear research facility in Israel widely believed to be central to the country’s undeclared nuclear weapons program.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dimona reactor canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11463261 — 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: Dimona reactor Context triple: [Dimona nuclear facility, alsoKnownAs, Dimona reactor]
-
A.
D Reactor
D Reactor was one of the early plutonium production reactors at the Hanford Site in Washington, built during the Manhattan Project to support the U.S. nuclear weapons program.
-
B.
K-West Reactor
K-West Reactor is one of the plutonium production reactors at the Hanford Site in Washington State, historically used to support the U.S. nuclear weapons program.
-
C.
S2W nuclear reactor
The S2W nuclear reactor was an early U.S. Navy pressurized water reactor design that powered the world’s first operational nuclear-powered submarine, USS Nautilus.
-
D.
K Reactor
K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
-
E.
ZEEP reactor
The ZEEP reactor was a small Canadian research nuclear reactor that played a key role in early nuclear physics experiments and the development of Canada's nuclear energy program.
- 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: Dimona reactor Target entity description: The Dimona reactor is a highly secretive nuclear research facility in Israel widely believed to be central to the country’s undeclared nuclear weapons program.
-
A.
D Reactor
D Reactor was one of the early plutonium production reactors at the Hanford Site in Washington, built during the Manhattan Project to support the U.S. nuclear weapons program.
-
B.
K-West Reactor
K-West Reactor is one of the plutonium production reactors at the Hanford Site in Washington State, historically used to support the U.S. nuclear weapons program.
-
C.
S2W nuclear reactor
The S2W nuclear reactor was an early U.S. Navy pressurized water reactor design that powered the world’s first operational nuclear-powered submarine, USS Nautilus.
-
D.
K Reactor
K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
-
E.
ZEEP reactor
The ZEEP reactor was a small Canadian research nuclear reactor that played a key role in early nuclear physics experiments and the development of Canada's nuclear energy program.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
nuclear facility
ⓘ
nuclear research reactor ⓘ plutonium production reactor ⓘ |
| alsoKnownAs |
Negev Nuclear Research Center
NERFINISHED
ⓘ
Negev Nuclear Research Facility NERFINISHED ⓘ |
| associatedWith |
Israeli Defense Establishment
NERFINISHED
ⓘ
Israeli nuclear weapons program NERFINISHED ⓘ |
| builtWithAssistanceFrom | France NERFINISHED ⓘ |
| constructionStart | late 1950s ⓘ |
| controlledBy | Government of Israel NERFINISHED ⓘ |
| coolant | heavy water ⓘ |
| country | Israel ⓘ |
| employs |
Israeli nuclear scientists
ⓘ
engineers and technicians ⓘ |
| fuelType | natural uranium ⓘ |
| governedBy | Israeli national security regulations ⓘ |
| hasFacility |
reprocessing plant (widely reported)
ⓘ
waste management installations ⓘ |
| infrastructure | underground facilities (widely reported) ⓘ |
| inspections | not open to routine international inspections ⓘ |
| linkedTo |
Israel’s policy of nuclear ambiguity
ⓘ
Israel’s policy of nuclear opacity ⓘ |
| location | Negev desert NERFINISHED ⓘ |
| near |
Sde Boker region
NERFINISHED
ⓘ
city of Dimona NERFINISHED ⓘ |
| notSubjectTo | IAEA comprehensive safeguards ⓘ |
| operationalSince | early 1960s ⓘ |
| operator | Israel Atomic Energy Commission NERFINISHED ⓘ |
| outsideRegimeOf | Treaty on the Non-Proliferation of Nuclear Weapons NERFINISHED ⓘ |
| purpose |
nuclear research
ⓘ
plutonium production ⓘ production of nuclear weapons material ⓘ tritium production ⓘ |
| reactorType | heavy-water moderated reactor ⓘ |
| region | Middle East ⓘ |
| relatedTo | Israeli policy of not confirming or denying possession of nuclear weapons ⓘ |
| roleInHistory | enabled Israel to become a de facto nuclear-armed state (widely believed) ⓘ |
| secrecyMeasures |
limited public information
ⓘ
restricted airspace ⓘ tight security perimeter ⓘ |
| securityClassification | top secret ⓘ |
| significance | central to Israel’s undeclared nuclear weapons program ⓘ |
| status | highly secretive ⓘ |
| subjectOf |
U.S.-Israel nuclear diplomacy
ⓘ
international proliferation concerns ⓘ regional security debates ⓘ |
| widelyBelievedTo |
produce plutonium for nuclear weapons
ⓘ
support Israel’s undeclared nuclear arsenal ⓘ |
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: Dimona reactor Description of subject: The Dimona reactor is a highly secretive nuclear research facility in Israel widely believed to be central to the country’s undeclared nuclear weapons program.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.