These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
O.S. map Monmouth Sheet X, Glamorgan Sheet VI Showing Abercanaid, Cwm, Cwm Glo, Brynbach, New Duffryn, Twyn Carno, Old Duffryn, Nantllesg, Pantywaun, Clynmil and Bargoed Collieries and Gethin Pits No.1 & 2. Also Plymouth Ironworks, Pentrebach Oronworks, Penydarren Ironworks, Cyfarthfa Ironworks, Dowlais Ivor Ironworks, Dowlais Ironworks, Rhumney Ironworks, Duffryn Ironworks and Ynysfach Ironworks, also Rhumney Brick and Tile Works, 1885
