Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Graph
Graph drawn in pencil on white, grey lined graph paper. Line graph showing the National System load curve and the typical NCB area load curve. Loose within a beige/light brown file with all other documents with the accession number 83.184I/70. The file is labeled 'Steam and Electric Collieries'.
Pwnc
Diwydiant
Rhif yr Eitem
83.184I/70 (9)
Derbyniad
Collected officially, 20/12/1983
Mesuriadau
Meithder
(mm): 186
Lled
(mm): 259
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.