Chwarel Ddu quarry was the earliest slate quarry in the Lledr Valley. It was working before 1810, and continued in sporadic operation until the late 1920s...

was built, and the quarry as we know it began to take shape. Adelaide quarry became a part of Allt Ddu, and Chwarel Fawr and Chwarel Goch became linked...

Hendre-Ddu Tramway was a 1 ft 11 in (584 mm) narrow gauge industrial railway built in 1874 in Mid-Wales to connect the Hendre-Ddu slate quarry to Aberangell...

Aberllefenni quarry is the collective name of three slate quarries, Foel Grochan, Hen Gloddfa (also known as Hen Chwarel) and Ceunant Ddu, located in Cwm...

"Penrhyn Castle and the Great Penrhyn Quarry Strike, 1900-03". The National Trust. Retrieved 25 July 2019. "Chwarel Pantdreiniog". Baner ac Amserau Cymru...

Prince Llewellyn quarry (also known as Bwlch Cynnud quarry, Y Foel quarry, Hendre Ddu quarry, or Prince Llywelyn quarry) was a slate quarry that stands on...

principle quarries in the valley were: Prince Llewellyn quarry and Chwarel Fedw Chwarel Ddu Ty'n-y-bryn quarry and Penllyn Rhiw-goch quarry The Gentleman's...

century at Chwarel Isaf (Lower Quarry), where William Davies died in 1770 as a result of a rock fall. David Davies is known to have quarried there between...

Carreg Cennan Cefn Blaenau Cernydd Carmel Talar Wen Quarry (Chwarel Talar Wen) Coed Cochion Quarry Coed Gwempa Coed Llandyfan Coedydd Capel Dyddgen Tregyb...

Wales. Many quarries had internal tramways, some using many dozens of miles of track. Others had private lines that stretched from the quarry to transhipment...