Bute Merthyr Colliery
Rhondda Cynon Taf, United Kingdom
The Bute Merthyr Colliery, in Treherbert in the Rhondda Valley, was the first colliery to produce steam coal in the Rhondda valley. A trial pit was dug in 1851, and the colliery was closed in 1926.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).