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The study of the negative effects on the human body through prolonged exposure to Manganese led to the identification of Manganism or manganese poisoning - a toxic condition resulting from chronic exposure to manganese - in 1837 by James Couper. Generally, exposure to ambient manganese air concentrations in excess of 5 micrograms Mn/m3 can lead to Mn-induced symptoms. In initial stages of manganism, neurological symptoms consist of reduced response speed, irritability, mood changes, and … [Read more...] about The Manganese Cocaine Bazooka