Ty'n-y-bryn quarry

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Coordinates: 53°03′04″N 3°52′39″W / 53.051124°N 3.877559°W / 53.051124; -3.877559[2]
Source: Wikipedia, the free encyclopedia.

Ty'n-y-bryn
UK
Coordinates53°03′04″N 3°52′39″W / 53.051124°N 3.877559°W / 53.051124; -3.877559[2]
SH 742 521
Production
ProductsSlate
TypeQuarry
History
Opened1840s
Active1840s–?; 1861–1914; 1920–1924
Closed1924 (1924)

Ty'n-y-bryn quarry (also known as Bwlch y Llan quarry or Lledr Vale quarry) was a slate quarry that was worked from the 1840s to about 1914.[3] It stands on the south-east edge of Dolwyddelan.

History

Quarrymen pose with their tools at Ty'n-y-bryn slate quarry
Map showing the Ty'n-y-bryn and Penllyn quarries and Dolwyddelan railway station in 1911

The original workings at Ty'n-y-bryn were started in the 1840s. In 1861, the quarry was restarted and a large mill was built just behind the Pentre-bont houses on the edge of Dolwyddelan. The mill had a large waterwheel which was fed from the Llyn Cwm-penamnen reservoir about 1 mile (1.6 km) to the south.[4]

In 1875, the Penllyn quarry was taken over by the company. Penllyn had been worked on a small scale since at least 1873,

standard gauge, allowing wagons from the London and North Western Railway to be taken up to the mill. It was one of only four slate quarries in North Wales that had standard gauge railway laid directly to its mill.[4]

Quarrying at the quarry ended in 1914.[3] There was an attempt to restart Penllyn, again using the Ty'n-y-bryn mill, in 1920. This lasted until 1924, when all work ceased.[4]

Geology

The quarry worked slate from the Nod Glas Formation, which outcrops along the Lledr Valley. Through most of its length, the Nod Glas is black shale, but in the area around Dolwyddelan a syncline compressed the shales and it developed enough cleavage to be worked as slate.[6]

References

  1. ^ "'53.051,-3.878' search on Wikishire". wikishire.co.uk. Retrieved 19 December 2020.
  2. ^ "Ty'n-y-bryn Slate Quarry (420114)". Coflein. RCAHMW. Retrieved 6 October 2019.
  3. ^
    ISBN 978-0-86381-552-2
    .
  4. ^ a b c Robinson, Iain (8 March 2013). "Ty'n y Bryn - A Gwydir Slate Quarry". Robinson Maps. Retrieved 14 September 2019.
  5. ^ "Dolyddelen quarries". North Wales Journal. 21 March 1873.
  6. ISBN 978-1-86239-200-7
    .
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