It can be truly said that Troedyrhiw was ‘built on coal’. The image shows Ash Road and Castle Colliery, Troedyrhiw. The pit was sunk in 1866 by the Crawshay (Cyfartha) Company and stopped production in 1935. At its peak in 1923 1,594 men were employed here. At 12.30 am on 10th July 1895 an explosion killed Daniel Sullivan 23, Robert Bodger 29 and Samuel Thomas 18.