Hendre-ladis Colliery, later Yniscedwyn Colliery (nprn 33373) site includes the ruined remains of a masonry chamber, engine bed and brick evasee for a Guibal fan house of around 1880.
(Source: Collieries of Wales, RCAHMW)
B.A.Malaws, RCAHMW, 01 June 2011.