Casgliadau Arlein

Typed in black ink on cream paper. Some details typed in purple ink. Some details have been handwritten in pencil and in black ink. The title has been crossed out using blue pencil, and 'discussion' had been written above it. The document is dated 14/5/45 and is signed by E.Ivor David. Comments made by E.Ivor David on the paper presented by B.L.Metcalf on the Economics of Power Consumption at Collieries. Loose within a beige/light brown file containing copies of the 'Metcalf papers' and documents relating to the 'Conversion of Turbo Compressor to Electrical Drive'.