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.
Amgueddfa Cymru – Museum Wales
Preparing coal for the market. A washing box in action at Cefn Coed Colliery, Crynant, with water in a state of agitation passing over the coal that is being separated from shale with which it may be contaminated.
