Bwllfa Colliery
Rhondda Cynon Taf, United Kingdom
Bwllfa Colliery was a coal mine located in the Dare valley near Cwmdare in Rhondda Cynon Taf, South Wales. It operated from 1856 to 1957, remaining open as a ventilation shaft for Mardy Colliery until 1989.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).