Worth noting the authors are from Porton Down: "Porton Down opened in 1916 as the War Department Experimental Station, shortly thereafter renamed the Royal Eng

Worth noting the authors are from Porton Down: "Porton Down opened in 1916 as the War Department Experimental Station, shortly thereafter renamed the Royal Engineers Experimental Station, for testing chemical weapons in response to German use of this means of war in 1915. The laboratory's remit was to conduct research and development regarding chemical weapons agents used by the British armed forces in the First World War, such as chlorine, mustard gas, and phosgene." https://en.wikipedia.org/wiki/Porton_Down https://en.wikipedia.org/wiki/Porton_Down