Yniscedwyn Colliery (previously known as Hendre-ladis Colliery) includes the ruined remains of a masonry chamber, engine bed and a 'Guibal' ventilating fan house - with an expanding brick built chimney - of around 1880.

Source:
Collieries of Wales, RCAHMW
A Guide to the Industrial Archaeology of the Swansea Region, by Stephen Hughes and Paul Reynolds, AIA, 1989

RCAHMW, 24 August 2011