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Arsenic and Old Lace FAQ
A bit on Arsenic: Arsenic is a naturally occurring element in the environment. Although renowned as a poison, it is used commercially in semi-conductor and microchip production and in some wood preservatives. Arsenic was once used in pigments for some wallpapers. Napoleon is thought to have suffered from arsenic poisoning while in exile at St Helena after the Battle of Waterloo because mould on the wallpaper released the arsenic from these pigments.