Rhif Archif
6210625
Disgrifiad
Field drawings and plottings of the Hetty Winding House at Gyfeillion Colliery, produced by Geoff Ward and David Percival 2001.
Enw Casgliad
Additional Information
Cyfrwng
Graphic.
Cychwynnwr
David J. Percival, Mr Geoff A. Ward, RCAHMW
Dyddiad
2001