Sanford Underground Research Facility
E373841
The Sanford Underground Research Facility is a deep underground laboratory in South Dakota that hosts major particle physics and astrophysics experiments, including serving as the far-site for the DUNE neutrino project.
All labels observed (4)
How this entity was disambiguated
This entity first appeared as the object of triple T3616209 — 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: Sanford Underground Research Facility Context triple: [DUNE experiment, farDetectorLocation, Sanford Underground Research Facility]
-
A.
Waste Isolation Pilot Plant
The Waste Isolation Pilot Plant is a deep geological repository in New Mexico designed for the long-term disposal of transuranic radioactive waste from U.S. nuclear weapons production.
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B.
Borexino
Borexino is a large liquid scintillator neutrino detector located at Italy’s Gran Sasso National Laboratory, designed to study low-energy solar and other neutrinos with extremely low background levels.
-
C.
Idaho National Engineering Laboratory
Idaho National Engineering Laboratory is a major U.S. nuclear research and development facility in Idaho known for pioneering reactor technologies and nuclear energy innovations.
-
D.
IceCube Neutrino Observatory
The IceCube Neutrino Observatory is a massive, cubic-kilometer-scale neutrino detector embedded deep in Antarctic ice, designed to observe high-energy neutrinos from cosmic sources.
-
E.
Savannah River National Laboratory
Savannah River National Laboratory is a U.S. Department of Energy research facility in South Carolina specializing in nuclear materials management, environmental remediation, and national security technologies.
- 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: Sanford Underground Research Facility Target entity description: The Sanford Underground Research Facility is a deep underground laboratory in South Dakota that hosts major particle physics and astrophysics experiments, including serving as the far-site for the DUNE neutrino project.
-
A.
Waste Isolation Pilot Plant
The Waste Isolation Pilot Plant is a deep geological repository in New Mexico designed for the long-term disposal of transuranic radioactive waste from U.S. nuclear weapons production.
-
B.
Borexino
Borexino is a large liquid scintillator neutrino detector located at Italy’s Gran Sasso National Laboratory, designed to study low-energy solar and other neutrinos with extremely low background levels.
-
C.
Idaho National Engineering Laboratory
Idaho National Engineering Laboratory is a major U.S. nuclear research and development facility in Idaho known for pioneering reactor technologies and nuclear energy innovations.
-
D.
IceCube Neutrino Observatory
The IceCube Neutrino Observatory is a massive, cubic-kilometer-scale neutrino detector embedded deep in Antarctic ice, designed to observe high-energy neutrinos from cosmic sources.
-
E.
Savannah River National Laboratory
Savannah River National Laboratory is a U.S. Department of Energy research facility in South Carolina specializing in nuclear materials management, environmental remediation, and national security technologies.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
scientific research facility
ⓘ
underground research laboratory ⓘ |
| abbreviation | SURF ⓘ |
| country | United States of America ⓘ |
| depthBelowSurface |
approximately 1,500 meters
ⓘ
approximately 4,850 feet ⓘ |
| formerlyPlannedAs |
Deep Underground Science and Engineering Laboratory
ⓘ
linked to:
Sanford Underground Research Facility
|
| fundedBy |
Sanford donation
ⓘ
State of South Dakota ⓘ
linked to:
South Dakota
U.S. Department of Energy ⓘ |
| hasEducationAndOutreachProgram | Sanford Lab Homestake Visitor Center outreach ⓘ |
| hasFacilityType | deep underground laboratory ⓘ |
| hasLowBackgroundEnvironment | yes ⓘ |
| hasPrimaryAccessShaft | Yates shaft ⓘ |
| hasSecondaryAccessShaft | Ross shaft ⓘ |
| hasSurfaceCampus | SURF surface campus in Lead ⓘ |
| hasUndergroundLevel |
2000 level
ⓘ
4100 level ⓘ 4850 level ⓘ |
| hasWebsite | https://www.sanfordlab.org ⓘ |
| hostsExperiment |
BHUC (Black Hills Underground Campus)
ⓘ
CASPAR accelerator experiment ⓘ DUNE far detector ⓘ
linked to:
DUNE experiment
DUNE prototype and infrastructure ⓘ LUX-ZEPLIN dark matter experiment ⓘ
linked to:
XENON
MAJORANA DEMONSTRATOR experiment ⓘ |
| inception | 2007 ⓘ |
| locatedIn | Lead, South Dakota ⓘ |
| locatedInAdministrativeTerritory | Lawrence County, South Dakota ⓘ |
| locatedInMountainRange | Black Hills ⓘ |
| locatedInTimeZone | Mountain Time Zone ⓘ |
| namedAfter | T. Denny Sanford ⓘ |
| occupiesFormerSiteOf |
Homestake Gold Mine
ⓘ
linked to:
Homestake Mine, South Dakota
|
| openedForExperiments | around 2012 ⓘ |
| operatedBy |
Sanford Underground Research Facility, Inc.
ⓘ
linked to:
Sanford Underground Research Facility
|
| partOf | U.S. national laboratory infrastructure for underground science ⓘ |
| primaryResearchField |
astroparticle physics
ⓘ
dark matter research ⓘ neutrino physics ⓘ nuclear astrophysics ⓘ particle physics ⓘ |
| roleInDUNE | far-site for the DUNE neutrino project ⓘ |
| usedFor |
direct dark matter detection
ⓘ
materials screening for low radioactivity ⓘ neutrinoless double-beta decay searches ⓘ nuclear astrophysics measurements ⓘ rare-event searches ⓘ |
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: Sanford Underground Research Facility Description of subject: The Sanford Underground Research Facility is a deep underground laboratory in South Dakota that hosts major particle physics and astrophysics experiments, including serving as the far-site for the DUNE neutrino project.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sanford Underground Research Facility
Sanford Underground Research Facility
→
formerlyPlannedAs
→
Deep Underground Science and Engineering Laboratory
ⓘ
linked to: Sanford Underground Research Facility
linked to: Sanford Underground Research Facility