Runit Dome
E290404
Runit Dome is a concrete containment structure built by the United States on Runit Island in the Marshall Islands to store radioactive debris from nuclear weapons testing.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Runit Dome canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2710383 — 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: Runit Dome Context triple: [Enewetak Atoll, containsStructure, Runit Dome]
-
A.
Genbaku Dome
Genbaku Dome, also known as the Hiroshima Peace Memorial, is the preserved ruin of a building near the hypocenter of the 1945 atomic blast and now serves as a UNESCO World Heritage Site symbolizing the horrors of nuclear war and the hope for peace.
-
B.
Meoto Iwa
Meoto Iwa is a famous pair of sacred "wedded" rocks off the coast of Futami in Japan, linked by a shimenawa rope and revered in Shinto as a symbol of marriage and harmonious unions.
-
C.
Yucca Mountain
Yucca Mountain is a mountain in the Nevada desert best known as the proposed site for the United States’ deep geological repository for high-level nuclear waste.
-
D.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
E.
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.
- 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: Runit Dome Target entity description: Runit Dome is a concrete containment structure built by the United States on Runit Island in the Marshall Islands to store radioactive debris from nuclear weapons testing.
-
A.
Genbaku Dome
Genbaku Dome, also known as the Hiroshima Peace Memorial, is the preserved ruin of a building near the hypocenter of the 1945 atomic blast and now serves as a UNESCO World Heritage Site symbolizing the horrors of nuclear war and the hope for peace.
-
B.
Meoto Iwa
Meoto Iwa is a famous pair of sacred "wedded" rocks off the coast of Futami in Japan, linked by a shimenawa rope and revered in Shinto as a symbol of marriage and harmonious unions.
-
C.
Yucca Mountain
Yucca Mountain is a mountain in the Nevada desert best known as the proposed site for the United States’ deep geological repository for high-level nuclear waste.
-
D.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
concrete dome
ⓘ
radioactive waste containment structure ⓘ |
| access | restricted ⓘ |
| alsoKnownAs | Cactus Dome ⓘ |
| associatedWith |
Operation Greenhouse
ⓘ
Operation Ivy ⓘ Operation Redwing ⓘ U.S. nuclear testing program ⓘ |
| builtOn |
Cactus nuclear test crater
ⓘ
surface form:
Cactus test crater
|
| completionDate | 1980 ⓘ |
| constructedBy |
United States Atomic Energy Commission
ⓘ
surface form:
U.S. Atomic Energy Commission
Department of Defense ⓘ
surface form:
U.S. Department of Defense
United States of America ⓘ
surface form:
United States
|
| constructionEndDate | 1980 ⓘ |
| constructionStartDate | 1977 ⓘ |
| contains |
encapsulated nuclear test residues
ⓘ
plutonium-contaminated material ⓘ radioactive debris ⓘ radioactive soil ⓘ waste from U.S. nuclear weapons tests ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| diameter | approximately 115 meters ⓘ |
| environmentalConcernFor |
Government of the Marshall Islands
ⓘ
surface form:
Marshall Islands government
local Enewetak community ⓘ |
| governedBy | Compact of Free Association arrangements ⓘ |
| height | approximately 7.6 meters ⓘ |
| jurisdiction |
Marshall Islands
ⓘ
surface form:
Republic of the Marshall Islands
|
| locatedIn |
Enewetak Atoll
ⓘ
Marshall Islands ⓘ Runit Island ⓘ |
| locatedInBodyOfWater | Pacific Ocean ⓘ |
| material | concrete ⓘ |
| monitoredBy |
Government of the Marshall Islands
ⓘ
surface form:
Republic of the Marshall Islands authorities
U.S. Department of Energy ⓘ
surface form:
United States Department of Energy
|
| namedAfter | Cactus nuclear test crater ⓘ |
| nearbySettlement |
Enewetak Atoll
ⓘ
surface form:
Enewetak Island
|
| notableFor |
being vulnerable to climate change impacts
ⓘ
containing legacy waste from Cold War nuclear testing ⓘ |
| partOf | Enewetak Atoll nuclear test cleanup ⓘ |
| purpose |
containment of nuclear test waste
ⓘ
containment of plutonium-contaminated soil and debris ⓘ storage of radioactive debris ⓘ |
| region | Micronesia ⓘ |
| risk |
potential leakage of radioactive material
ⓘ
sea level rise impact ⓘ structural degradation ⓘ |
| shape | hemispherical dome ⓘ |
| status | closed radioactive waste site ⓘ |
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: Runit Dome Description of subject: Runit Dome is a concrete containment structure built by the United States on Runit Island in the Marshall Islands to store radioactive debris from nuclear weapons testing.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Eniwetok Atoll