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Amgueddfa Cymru – Museum Wales
Three letters attached with a paperclip. One letter from Cardiff Collieries Ltd, typed in black ink on cream, company headed paper. Two letters from the H.M. Medical Inspector of Factories, typed in black ink on cream paper. Correspondence between Cardiff Collieries Limited and the H.M. Inspector of Factories re. the medical examination of workers. Letters dated March 1943.
