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Amgueddfa Cymru – Museum Wales
Handwritten in pencil on off-white paper. Notes on the Middle Duffryn Power station, relating to the ovens, cooling water temperature and vaccum. Figures given for Jan, Feb, March 1953, and June and August 1952. The document is dated March 12 1953. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.
