Penrhyn Slate Quarry

E309449

industrial heritage site slate quarry

Penrhyn Slate Quarry is a historic and once world-leading slate mine in Bethesda, North Wales, central to the region’s industrial heritage and landscape.

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All labels observed (5)

Label	Occurrences
Penrhyn Quarry	6
Penrhyn slate quarries	2
Zip World Penrhyn Quarry	2
Penrhyn Slate Quarry canonical	1
Penrhyn slate quarry	1

How this entity was disambiguated

This entity first appeared as the object of triple T2908378 — 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: Penrhyn Slate Quarry
Context triple: [Slate Landscape of Northwest Wales, hasPart, Penrhyn Slate Quarry]

A. Arenig quarry
Arenig quarry is a disused slate quarry in the Arenig Fawr area of Snowdonia, north Wales, historically worked for roofing slate.
B. Pwll Du quarries
Pwll Du quarries are historic limestone quarries in South Wales that formed a key part of the Blaenavon area's 18th–19th century iron and industrial operations.
C. Blaengwrach
Blaengwrach is a small village and community in the Neath Valley of South Wales, known for its scenic surroundings and former coal mining heritage.
D. Caerphilly
Caerphilly is a town in South Wales known for its historic medieval castle and as the namesake of Caerphilly cheese.
E. Garn-yr-erw quarries
Garn-yr-erw quarries are historic stone quarries in South Wales that form part of the Blaenavon Industrial Landscape UNESCO World Heritage Site, reflecting the region’s 19th-century industrial and mining heritage.
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: Penrhyn Slate Quarry
Target entity description: Penrhyn Slate Quarry is a historic and once world-leading slate mine in Bethesda, North Wales, central to the region’s industrial heritage and landscape.

A. Arenig quarry
Arenig quarry is a disused slate quarry in the Arenig Fawr area of Snowdonia, north Wales, historically worked for roofing slate.
B. Pwll Du quarries
Pwll Du quarries are historic limestone quarries in South Wales that formed a key part of the Blaenavon area's 18th–19th century iron and industrial operations.
C. Blaengwrach
Blaengwrach is a small village and community in the Neath Valley of South Wales, known for its scenic surroundings and former coal mining heritage.
D. Caerphilly
Caerphilly is a town in South Wales known for its historic medieval castle and as the namesake of Caerphilly cheese.
E. Garn-yr-erw quarries
Garn-yr-erw quarries are historic stone quarries in South Wales that form part of the Blaenavon Industrial Landscape UNESCO World Heritage Site, reflecting the region’s 19th-century industrial and mining heritage.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	industrial heritage site ⓘ slate quarry ⓘ
associatedWith	labour disputes in the Welsh slate industry ⓘ
associatedWithEvent	Great Penrhyn Strike ⓘ linked to: Penrhyn quarry strike
associatedWithEventEnd	1903 ⓘ
associatedWithEventStart	1900 ⓘ
country	United Kingdom ⓘ
culturalSignificance	associated with Welsh working-class heritage ⓘ symbol of Welsh industrial history ⓘ
economicImpact	contributed significantly to the economy of North Wales ⓘ
environmentType	mountainous region ⓘ
exportDestination	Europe ⓘ North America ⓘ United Kingdom ⓘ
geologicalEra	Ordovician ⓘ
heritageDesignation	part of UNESCO World Heritage Site "The Slate Landscape of Northwest Wales" ⓘ
heritageDesignationDate	2021 ⓘ
historicalRole	key employer in Bethesda ⓘ major global centre of slate production ⓘ
industry	construction materials industry ⓘ mining industry ⓘ
knownFor	industrial heritage significance ⓘ roofing slate ⓘ slate production ⓘ
landscapeImpact	dominant feature of the Ogwen Valley landscape ⓘ
languageOfPlace	English ⓘ Welsh ⓘ
locatedIn	Bethesda, Gwynedd ⓘ
locatedInHistoricCounty	Caernarfonshire ⓘ
locatedInRegion	North Wales ⓘ
materialExtracted	Ordovician slate ⓘ
nearbySettlement	Bethesda ⓘ
ownedBy	Penrhyn Estate ⓘ linked to: Plas Madoc estate
partOf	The Slate Landscape of Northwest Wales ⓘ linked to: Slate Landscape of Northwest Wales Welsh Slate industry ⓘ linked to: North Wales slate industry
product	roofing tiles ⓘ slate ⓘ slate slabs ⓘ
region	Snowdonia area ⓘ linked to: Snowdonia
significantPeriod	19th century ⓘ Victorian era ⓘ
status	operational quarry ⓘ
tourism	viewed from public viewpoints and trails ⓘ
transportHistory	linked historically to Port Penrhyn ⓘ served by narrow-gauge railways ⓘ
workforceType	labourers ⓘ quarrymen ⓘ stone splitters ⓘ

How these facts were elicited