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Amgueddfa Cymru – Museum Wales
Four pages of notes typed in black ink on cream paper, held together with a paperclip. Pages 1-2: programme for blowing in No.1 furnace and blowing out No.4 furnace, 2-3 January 1953. Page 3: stop periods for repairs 1953. Page 4: No.4 furnace filling charge, 29th March 1955.