Pacific Proving Grounds

E410900

nuclear test site weapons testing range

The Pacific Proving Grounds was a major U.S. Cold War nuclear test site in the Marshall Islands where numerous atmospheric and underwater nuclear detonations were conducted.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (4)

Label	Occurrences
Pacific Proving Grounds canonical	12
Enewetak Proving Ground	3
Pacific Proving Grounds tests	1
former Pacific Proving Grounds	1

How this entity was disambiguated

This entity first appeared as the object of triple T4080548 — 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: Pacific Proving Grounds
Context triple: [United States nuclear weapons testing, location, Pacific Proving Grounds]

A. Vandenberg
Vandenberg is a Dutch hard rock band formed by guitarist Adrian Vandenberg, known for its melodic 1980s metal sound and later association with Whitesnake.
B. Shoalwater Bay Training Area
Shoalwater Bay Training Area is a major Australian Defence Force military training facility on the central Queensland coast, known for its large, relatively undisturbed coastal and bushland environment.
C. Kauai Test Facility, Hawaii
Kauai Test Facility in Hawaii is a remote Sandia National Laboratories range used primarily for testing rockets, missile defense systems, and advanced aerospace technologies over the Pacific.
D. Edwards Air Force Base
Edwards Air Force Base is a major U.S. Air Force installation in Southern California known as a primary site for flight testing, aerospace research, and historic aviation milestones.
E. China Lake
China Lake is a freshwater lake in central Maine known for recreation, wildlife habitat, and serving as a local water source.
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: Pacific Proving Grounds
Target entity description: The Pacific Proving Grounds was a major U.S. Cold War nuclear test site in the Marshall Islands where numerous atmospheric and underwater nuclear detonations were conducted.

A. Vandenberg
Vandenberg is a Dutch hard rock band formed by guitarist Adrian Vandenberg, known for its melodic 1980s metal sound and later association with Whitesnake.
B. Shoalwater Bay Training Area
Shoalwater Bay Training Area is a major Australian Defence Force military training facility on the central Queensland coast, known for its large, relatively undisturbed coastal and bushland environment.
C. Kauai Test Facility, Hawaii
Kauai Test Facility in Hawaii is a remote Sandia National Laboratories range used primarily for testing rockets, missile defense systems, and advanced aerospace technologies over the Pacific.
D. Edwards Air Force Base
Edwards Air Force Base is a major U.S. Air Force installation in Southern California known as a primary site for flight testing, aerospace research, and historic aviation milestones.
E. China Lake
China Lake is a freshwater lake in central Maine known for recreation, wildlife habitat, and serving as a local water source.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	nuclear test site ⓘ weapons testing range ⓘ
closureReason	Partial Test Ban Treaty and shift to underground testing ⓘ
contains	Bikini Atoll ⓘ Enewetak Atoll ⓘ Enjebi Island ⓘ Nam Island ⓘ Parry Island ⓘ Runit Island ⓘ
country	United States ⓘ linked to: United States of America
endDate	1962 ⓘ
environmentalImpact	long‑term marine contamination ⓘ radioactive contamination of Bikini Atoll ⓘ radioactive contamination of Enewetak Atoll ⓘ
firstThermonuclearTest	Ivy Mike ⓘ
healthImpact	increased cancer rates among exposed populations ⓘ radiation exposure to Marshallese population ⓘ
historicalSignificance	development of thermonuclear weapons ⓘ
largestUSNuclearTest	Castle Bravo ⓘ
legalImpact	Marshall Islands nuclear claims settlements ⓘ
locatedIn	Pacific Ocean ⓘ
location	Marshall Islands ⓘ
notableEvent	Operation Castle ⓘ Operation Crossroads ⓘ Operation Greenhouse ⓘ Operation Hardtack I ⓘ Operation Ivy ⓘ Operation Redwing ⓘ Operation Sandstone ⓘ
notableTest	Castle Bravo ⓘ Crossroads Able ⓘ Crossroads Baker ⓘ linked to: Baker Ivy Mike ⓘ
numberOfTests	over 100 ⓘ
operator	United States Atomic Energy Commission ⓘ United States Department of Defense ⓘ linked to: Department of Defense
partOf	Trust Territory of the Pacific Islands ⓘ United States nuclear weapons program ⓘ
socialImpact	displacement of Bikini Atoll inhabitants ⓘ displacement of Enewetak Atoll inhabitants ⓘ
startDate	1946 ⓘ
status	closed ⓘ
timePeriod	Cold War ⓘ
usedFor	atmospheric nuclear tests ⓘ high‑yield nuclear tests ⓘ nuclear weapons testing ⓘ surface nuclear tests ⓘ thermonuclear weapons testing ⓘ underwater nuclear tests ⓘ
yieldOfCastleBravo	15 megatons of TNT ⓘ

How these facts were elicited