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One man who was heavily involved in the manufacture of an arsenic-based weapon known as the ‘M’ device was the author’s Tasmanian great-uncle, Major Thomas Davies DSO, MC. It was during the production of this weapon in 1918-19 that large numbers of young women were exposed to highly toxic arsenic-based chemicals. It is suggested…

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“Secret” is a word which is heavily overused, but in this case, it seems to be appropriate. All those involved in the development, manufacture deployment and disposal of this weapon were sworn to secrecy, and it appears that they kept their word. A detailed examination of over 70 documents held at The National Archives,…