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Amgueddfa Cymru – Museum Wales
Typed in black ink on white, company headed paper (Guest Keen Baldwins Iron & Steel Co. Ltd.). Memorandum from the blast furnace department, East Moors Works, to Mr W.C. Smith, Director and Works Manager. Memorandum re. Radioactives Cobalt 60 Isotopes. Dated 31st July, 1953.
