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Amgueddfa Cymru – Museum Wales
Eight pages attached with a paperclip. Printed in purple ink on off-white paper. Handwritten details are blueprinted onto the page. The British (G.K.B.) Iron & Steel Co. Ltd. blast furnace department, Margam Works. Production information for weeks ended May 2nd, 9th, 16th, 23rd, 30th and June 6th, 13th and 20th 1931.
