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Amgueddfa Cymru – Museum Wales
Handwritten in pencil on off-white, blue ruled paper. Three pages held together with a paperclip. Includes notes relating to the Cefn Coed Colliery winder - dated Oct 22nd, 1929. The back page of the document contains notes dated Sept 1949, and contain information relating to steam production. Loose within a green card file with all other documents with accession number 83.184I/67. The file is labelled 'Colliery Boiler Plant B31', 'Cefn Coed Data' and 'Colliery Engineering'.
