Casgliadau Arlein

Handwritten in pencil and on off-white, blue ruled paper. Two pages (with notes on the second page) entitled 'Actual units generated for year 1922'. Figures are given for Elliot Colliery, Penallta, Bargoed Power House, Middle Duffryn and two others. Loose within a beige/light brown file with all other documents with the accession number 83.184I/70. The file is labelled 'Steam and Electric Collieries'.