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Powys Metal Mines Survey


Cwmgwnen lies in the community of Llanfyllin in the county of Powys. It is located at Ordnance Survey national grid reference SJ0829422031. The mine is recorded in the CPAT Historic Environment Record as number 18973 and this number should be quoted in all correspondence.

Cwmgwnen, CPAT photo                Phosphate (1863-1885)

Graphitic phosphate concretions in Ordovician Bala limestone along with calcite and barytes mineralisation.

There are two levels with stoping up to the surface on the higher ground above at SJ08252209.

An 18" gague tramway was apparently in use from the lower level but could not be located due to dense forestry.

No evidence.

No evidence.

Other features
No evidence.

Phosphate mine worked in the 19th and early part of the 20th centuries.There are two levels (PRN 39034 and PRN 39035) with stoping up to the surface.

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.