Windsor Colliery
Abertridwr, United Kingdom
Windsor Colliery was a coal mine in the village of Abertridwr, Caerphilly. Opened in 1895, it amalgamated with the Nantgarw Colliery in 1974, and closed in 1986. Ty'n y Parc (Welsh for "house on the park") housing estate now occupies the site.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).