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.
Deep Duffryn Colliery Curtilage Plan scale 1/2500. National Coal Board South Wales Area Mining Dept. 1978. With letter attached from the Area Chief Surveyor & Minerals Manager, Llanishen To Manager, Deep Duffryn Colliery re:plan.
