 In total, about 3600 persons have worked within this division since the launching of the production in Troisdorf in the 1940s.Infringing the health and safety regulations in force at that time, the employees of Dynamit Nobel were exposed for years, with little protection, to this harmful substance which later turned out to be carcinogenic.Therefore, they were heavily contaminated by vinyl chloride gas or by cleaning up the autoclaves.