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Typed in black ink on white paper. Two pages stapled together. 'Escher Wyss Ltd.' headed paper, printed in black ink. The letter is signed (signature unidentified) using black ink, with 'Escher Wyss Limited' stamped in purple ink underneath the signature. Some details handwritten in pencil. A letter addressed to E.Ivor David at Powell Duffryn House, from Escher Wyss Ltd. replying to a letter regarding the turbo alternators at Middle Duffryn Power Station. Dated 15th December 1952. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.
