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The Slate Industry in the Nantlle Valley was the major industry of the area. The Nantlle Valley is the site of oldest slate quarry in Wales at Cilgwyn, and during the nineteenth and twentieth centuries it was a major centre of the Slate industry in Wales. The quarries of the area are a World Heritage Site. [1]
The quarry sits at the bottom of the wide Nantlle valley and consists of six pits, the deepest dropping 106m from the surface. The slate veins here run vertically, allowing unusually deep vertical pits to be dug. Because the pits fall below the water table they needed to be constantly pumped to stay dry.
The Nantlle Valley is famous within Wales for being the main setting of the Fourth branch of the Mabinogi, Math fab Manawydan, the story of Lleu Llaw Gyffes, Blodeuwedd and Gwydion. The story is set mainly in the area with Gwydion finding Lleu transfigured into an eagle in an oak tree at Baladeulyn (the ground that used to exist between the two ...
Cilgwyn quarry is a slate quarry located on the north edge of the Nantlle Valley, in North Wales. It is one of the earliest slate quarries in Great Britain, having been worked as early as the 12th century. [1] [2] King Edward I of England was reputed to have stayed in a house roofed by Cilgwyn slates during his conquest of Wales. [3]
Alexandra quarry was a slate quarry in North Wales, on the slopes of Moel Tryfan in north Gwynedd.It was part of one of the major slate quarrying regions of Wales, centred on the Nantlle Valley during the 19th and 20th centuries.
Pen-yr-Orsedd quarry was a slate quarry in the Nantlle Valley in North Wales. It was one of the last slate quarries operating in North Wales and the last operating in the Nantlle Valley area, finally closing in 1979.
The first steam engine to be used in the slate industry was a pump installed at the Hafodlas quarry in the Nantlle Valley in 1807, but most quarries relied on hydropower to drive machinery. [ 25 ] Wales was by now producing more than half the United Kingdom's output of slate, 26,000 tons out of a total UK production of 45,000 tons in 1793. [ 26 ]
The Nantlle Railway (or Nantlle Tramway) was a Welsh narrow gauge railway. It was built to carry slate from several slate quarries across the Nantlle Valley to the harbour at Caernarfon for export by sea. The line provided a passenger service between Caernarfon and Talysarn from 1856 to 1865. It was the first public railway to be operated in ...