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Amgueddfa Cymru – Museum Wales
Typed in black ink on white paper. National Coal Board S.W division headed paper. Signed in blue ink. A letter from A.W.Kidd to Major E.Ivor David at Powell Duffryn House regarding information about the turbo alternators etc. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.
