Unidad documental compuesta 121 - Correspondence with A H Wilson and H E Wimperis

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Correspondence from 1933 is re a request by Thomson for Mesothorium, and offers to send him four samples of luminous compound, then in possession of the Air Ministry. A copy of a report on the compounds by the National Physical Laboratory, September 1931, is enclosed with the letter. 1933, 1947

The compounds, sent by Wimperis, were found with the letter when the Thomson collection was being sorted in 1980. They were mildly radioactive and were handed over to the Oxford University Radiation Protection Officer for disposal.

1947 correspondence is re world stocks of uranium.