![](https://coimages.sciencemuseumgroup.org.uk/711/82/large_thumbnail_2023_0467__0010_.jpg)
Top and bottom coal
- Made:
- 1843-1889
![Top and bottom coal, no](https://coimages.sciencemuseumgroup.org.uk/390/378/medium_smg00087516.jpg)
Top and bottom coal, no.2 vein, Rhondda Waterfall Colliery, Glyn Neath, Glamorganshire, analysed by W.J. Ward
Top and bottom coal, no.2 vein, Rhondda Waterfall Colliery, Glyn Neath, Glamorganshire, analysed by W.J. Ward