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Powys Metal Mines Survey


Nantybrain (also known as Abergwesyn) lies in the community of Llanwrtyd Wells in the county of Powys . It is located at Ordnance Survey national grid reference SN83205045 . The mine is recorded in the CPAT Historic Environment Record as number 5517 and this number should be quoted in all correspondence.

Lead (1840s-1883)

Two or three lodes were worked on a north-south strike with galena mineralisation.

There is a deep adit at SN84305157. A further adit can be seen at SN83255025. There are two shafts at SN83235018 and SN83215029, the lower of which connects to the second adit mentioned above. Surface trials can be seen in a number of places on the slopes of Esgair Nant Y Bryn and Pen Y Foel.

A leat off the Nant Ddwfn supplied water to the waterwheels for pumping and crushing. The old metalled track along the north-eastern slopes of Esgair Nant Y Brain is probably the original miners' trackway. There are a number of earthwork survivals of tramway track beds leading out onto the spoil heaps from the workings.

The waterwheel pit at SN83155055 was used for pumping the shafts and in 1871 a 30x2.5ft waterwheel was apparently installed. A second smaller waterwheel pit can be seen at SN83155049 which still displays an intact axle and parts of the rim. Immediately prior to closure in 1850 two engines were installed and the dressing floors were expanded with a crusher house, jiggers and buddles, foundations of which can still be seen.

Evidence exists of manual dressing and mechanised forms of processing in the form of a crusher house and platforms for jigger bases as well as round buddles. Ore bins and a picking/washing floor are also present.

Other features
No evidence.

This HTML page is reproduced from the Powys and Clwyd Metal Mine Surveys which were undertaken between May 1992 and December 1993 by Mark Walters and Pat Frost of the Clwyd Powys Archaeological Trust with financial support from Powys County Council, Clwyd County Council and Cadw: Welsh Historic Monuments. Further information about this site is available in CPAT's Regional Historic Environment Record.
Page produced by Rachel Stebbings and Chris Martin.