Dinorwig Slate Quarry

E311862

industrial heritage site slate quarry

Dinorwig Slate Quarry is a historic former slate mine in northwest Wales, renowned for its vast industrial landscape and role in the region’s 19th-century slate boom.

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All labels observed (8)

Label	Occurrences
Dinorwig slate quarries	4
Dinorwig slate quarry	3
Dinorwig mountain	2
Dinorwic quarry	1
Dinorwic slate quarries	1
Dinorwic slate quarry workshops	1
Dinorwig Slate Quarry canonical	1
Dinorwig village	1

How this entity was disambiguated

This entity first appeared as the object of triple T2908379 — 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: Dinorwig Slate Quarry
Context triple: [Slate Landscape of Northwest Wales, hasPart, Dinorwig Slate Quarry]

A. Penrhyn 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.
B. Arenig quarry
Arenig quarry is a disused slate quarry in the Arenig Fawr area of Snowdonia, north Wales, historically worked for roofing slate.
C. 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.
D. 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.
E. Ecclefechan
Ecclefechan is a small village in Dumfries and Galloway in southwest Scotland, noted as the birthplace of the writer and historian Thomas Carlyle.
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: Dinorwig Slate Quarry
Target entity description: Dinorwig Slate Quarry is a historic former slate mine in northwest Wales, renowned for its vast industrial landscape and role in the region’s 19th-century slate boom.

A. Penrhyn 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.
B. Arenig quarry
Arenig quarry is a disused slate quarry in the Arenig Fawr area of Snowdonia, north Wales, historically worked for roofing slate.
C. 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.
D. 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.
E. Ecclefechan
Ecclefechan is a small village in Dumfries and Galloway in southwest Scotland, noted as the birthplace of the writer and historian Thomas Carlyle.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	industrial heritage site ⓘ slate quarry ⓘ
closureDate	1969 ⓘ
contains	National Slate Museum ⓘ restored workshops ⓘ water-powered machinery remains ⓘ
country	United Kingdom ⓘ
culturalSignificance	symbol of Welsh industrial heritage ⓘ
currentUse	industrial archaeology site ⓘ tourist attraction ⓘ
economicImpact	major employer in Llanberis area ⓘ
employedPeople	over 3000 workers at peak ⓘ
heritageDesignation	part of UNESCO World Heritage Site "The Slate Landscape of Northwest Wales" ⓘ linked to: Slate Landscape of Northwest Wales
heritageDesignationDate	2021 ⓘ
landscapeType	mountainous industrial landscape ⓘ
languageRegion	Welsh-speaking area ⓘ
locatedIn	Snowdonia ⓘ Wales ⓘ northwest Wales ⓘ linked to: north-west Wales
locatedInAdministrativeTerritory	Gwynedd ⓘ
locatedInOrNear	Llanberis ⓘ
locatedOn	Dinorwig mountain ⓘ linked to: Dinorwig Slate Quarry
materialExtracted	slate ⓘ
nearbyFacility	Dinorwig Power Station ⓘ
nearbyWaterBody	Llyn Padarn ⓘ Llyn Peris ⓘ
notableFeature	engine houses ⓘ extensive stepped galleries ⓘ incline systems ⓘ massive waste tips ⓘ tramway remains ⓘ workshops ⓘ
openingDate	18th century ⓘ
owner	Assheton Smith family ⓘ linked to: Assheton family
partOf	Gwynedd slate quarrying region ⓘ linked to: Gwynedd Welsh slate industry ⓘ
peakActivityPeriod	late 19th century ⓘ
product	roofing slate ⓘ slate slabs ⓘ
significantEvent	19th-century slate boom ⓘ
significantPeriod	19th century ⓘ
status	disused ⓘ
tourismActivity	guided tours ⓘ industrial heritage interpretation ⓘ walking and hiking ⓘ
transportInfrastructure	Padarn Railway ⓘ linked to: Llanberis Lake Railway internal narrow-gauge tramways ⓘ

How these facts were elicited