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Amgueddfa Cymru – Museum Wales
Typed in black ink on off-white paper. Some details handwritten in pencil. A 6-page document with data relating to output figures for Bargoed and Middle Duffryn Power Stations, data relating to the medium pressure boilers, boiler plant efficiency and the sulzer boilers. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.
