Ty Mawr Colliery, Pontypridd; series of notes produced by David Leighton (2000), Stephen Hughes (1995) and Geoff Ward (2003)accompanied by measured drawings and annotated section of Ordnance Survey 25 inch map.
Enw Casgliad
NMR Site Files
Cyfrwng
Text, Graphic, Cartographic.
Cychwynnwr
Stephen R. Hughes, Mr Geoff A. Ward, David K. Leighton
