Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Notes
Handwitten in pencil on off-white, blue ruled paper. Two tables containing compressed air figures for Britannia Colliery, Penallta Colliery and Bargoed. 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'.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.