Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Graph
unknown
()
Handwritten in black ink and pencil on white graph paper with printed brown graph lines. Some details highlighted using red and yellow pencil. A graph on the effect of excess dust weight. The years plotted on the graph are 1940 - 1946. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.
Pwnc
Diwydiant
Rhif yr Eitem
83.184I/62 (47)
Historical Associations
Associated Person/Body: Powell Duffryn Ltd.
Association Type: Company name
Association Type: Associated date
Date: 1940
Creu/Cynhyrchu
Cyfnod: 20/02/1953
Derbyniad
collected officially, 20/12/1983
Mesuriadau
Meithder
(mm): 153
Lled
(mm): 237
Deunydd
Paper
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.