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Amgueddfa Cymru – Museum Wales
A memorandum, two letters and a page of handwritten notes attached with a paperclip. Guest Keen Baldwins Iron & Steel Co. Ltd. memorandum, re. screening test on agglomerate (jet screening), typed on company headed paper. Two letters also re. screening test on agglomerate, typed in black ink on cream paper. Also a page of notes re. agglomerate size test, handwritten in pencil on white paper.
