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Amgueddfa Cymru – Museum Wales
Title: "Characteristics of Existing Stoves Compared with Requirements for and 18ft Fce. Taking 43,600 C.F.M.@ 1,500°F." 2 pages of notes plus cover letter. Notes are typed in black ink on cream paper. Cover letter typed in black ink on pink paper. Letter re. the notes, sent from R. Graham (Blast Furnace Engineer) to L.V. Amor (chief engineer), dated 14th October 1948.