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Amgueddfa Cymru – Museum Wales
Photocopy of a technical drawing (reduced in size). Black on white. H.A. Brassert & Co. Ltd. technical drawing, showing general arrangement of No.4 blast furnace lining at Messrs Stewarts & Lloyds Ltd., Corby. Alongside is a table containing information and a drawing showing circumferential development on outside of hearth brickwork. Dated 20-3-37
