A factory for producing the pesticide hexachlorocyclohexane (HCR) in its technical grade (mix of the a, b, g, and s isomers), that belonged to the former Institute of Malaria Sciences, then Ministry of Education and Health, located in the “Cidade dos Meninos”, county of Duque de Caxias, State of Rio de Janeiro, was closed down in 1955. Part of its production and wastes – many tons this mix – were left behind on the site. The action of winds and […]
