K 1914 Penrhos Brick Co (William Davies. Sec), Ystradgynlais Breconshire.
K 1920 Penrhos Brick Co (Saml. Davies. Sec)
K 1923 ditto
K 1926 ditto
Cope 1931/2 Penrhos (The) Brick Co.
ID 52 Penrhos Brick Works Co Ltd
ID 64 ditto
Clay 61 Penrhos Brick Works Co Ltd, Gloucester Chambers, Swansea, (Works: Penrhos, Ystradgynlais)
D&P 102 Industrial rly connection to SV&N&BJR.
Site visit April 1995. No part of brick works left on site. Ventilation shaft for colliery is still standing, has a preservation order on it. Owner of site says b/w was dismantled mid 1960s but had been out of use for some time before.