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Amgueddfa Cymru – Museum Wales
Nine pages stapled together. Printed in purple and pink ink on white paper. Details typed in purple and red ink. Baldwins Ltd. Port Talbot Steel Works, cost sheet for plate mills 1 & 2 , the cogging mill, bar mills No's 1 and 2 and the No.2 melting shop. Costs for week ended 21st December 1929. Also cost sheet for the melting shop at Margam steel works for week ended 21st December 1929.
