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Amgueddfa Cymru – Museum Wales
Two printed photographs and a diagram of the MSA self rescuer which have been cut out and stuck onto a piece of blank paper. There are two black and white printed photographs of a man wearing the self-rescuer. There is also a diagram showing the 'details and specifications of the self-rescuer approved by the U.S bureau of mines.' Dated 1924. Document 88.98I/3 (1) to (4) were originally contained within an acidic card file.
