Craig y Mwyn

aka Craig-y-Mwyn, Craig y Mwn, or East Llangynog


Lead Mine

Worked from 18C to 1880

Jan 1st, 2024 from Cambrian by Buddle-Bot

Feb 16th, 2025 by BertyBasset



North Wales
Llanrhaedr ym Mochnant
52.8470078, -3.3732829
SJ 0761 2861
Open Access
420m
#273


The site is located within Ordovician Llangynog Formation shales, slates, and tuffs, with two ENE-WSW veins and two E-W veins containing galena and sphalerite in a matrix of calcite, quartz, and barytes. Extensive mining remains include hushing earthworks, semi-circular dams, leats, and open stopes. The opencast workings have left a significant debris fan extending to the dressing floors. Transport infrastructure included a tramway from No.1 level to the opencast and a steep incline leading to the dressing floors, with evidence of an ore chute from 1885. A reservoir and multiple leats, fed by local streams, supplied water power, including a 30x4 ft waterwheel for crushing machinery. Processing remains include a crusher house, stone breaker, wheelpit, and possible ore bins. Other features include a magazine, possible mine office or smithy, workshops, stables, and miners’ cottages. Foundations of an 18th-century building remain at the western end of the opencast, while another rectangular structure nearby may have had agricultural origins.



Year Activity
1751 Martin O’ Connor is told that a large quantity of ore had formerly been raised, although nothing about 100 tons in previous six years. He also notes a 20 fm deep shaft north of the main lode, 2 men working the mine and traces of hushing on the hillside.
1789 Mine active again.
1850 Mining Company of Wales hold sett. Four level, with No3 driven 60 fm to a 2 foot lode of solid lead ore.
1855 Bell Williams reports to the company on state of levels and plant at the mine. Mine put up for sale, but probably remains idle.
1870 Vigourous promotion as East Llangynog, with 2 sockbrokers, J.P. Endean and Joseph Taylor amongst owners. A claim that the lode was worth £100/fathom was refuted by former Llangynog manager James Thomas to whom the claim had been attributed. This fails to dissuade shareholder investing, with one claiming Taylor had made £60,000.
1874 Company collapses.
c8175 Taylor re-acquires the property for £4,600 and sells it to newly formed Llanrhaiadr Lead Mining Company for £20,000, half in cash, half in shares!
1876 Work concentrated on Deep adit, with hand pumps allowing sinking to 10 fm.
1880 Company wound up.
c1910 Operated for a few years.

943 tons lead ore returned since 1845 mainly by East Llangynog venture.



Publications (9)

  • (1922); BGS - Mineral Resources of GB (c1920s) Vol XXIII - Lead & Zinc: Pre-Carboniferous Shropshire & North Wales; 111 pages
  • Bick, D.E. (1991); Old Metal Mines of Mid-Wales, The; West Montgomeryshire, Aberdovey, Dinas Mawddwy & Llangynog - Part 5; pp. 36-38
  • Bick, David (1994); PDMHS (Peak District Mines Historical Society) 12-3 Sum - Early Mining Leats and Ponds in Wales; 4 pages (37-40)
  • Foster-Smith, J. R. (1978); Mines of Montgomeryshire and Radnorshire, The
  • Hughes, Stephen (1994); PDMHS (Peak District Mines Historical Society) 12-3 Sum - The Hushing Leats at Cwmystwyth, The; 6 pages (48-53)
  • Jones, Nigel and Walters, Mark and Frost, Pat (2004); Mountains and Orefields; 208 pages
  • Law Journal Reports XXXI (1853); pp 589-591
  • Timberlake, S. (2002); Title unknown - Dylife Mine etc
  • Williams, R. A. (1985); Old Mines of the Llangynog District, The





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