Rhif Archif
6065859
Disgrifiad
A typed descriptive account with a pencil sketch plan of Frongoch mine magazine (II).
Enw Casgliad
NMR Site Files
Cyfrwng
Graphic, Text.
Cychwynnwr
Mr Anthony J. Parkinson, RCAHMW
Dyddiad
1983-09-14 to 1984-09-21