Spandau Prison determine who controlled the prison. The prison was demolished in 1987, largely to prevent it from becoming a neo-Nazi shrine, after the death of its final remaining prisoner, Rudolf Hess, who had been the prison's sole occupant after the release of Speer and von Schirach in 1966. To further ensure its erasure, the site was made into a parking facility and a NAAFI shopping center, named "The Britannia Centre Spandau" and nicknamed "Hessco's" after the well known British supermarket chain, Tesco. All materials from the demolished prison were ground to powder and dispersed in the North Sea or buried at
Inert gas asphyxiation concentration in inspired gas and blood to dangerously low levels, thereby eventually depriving all cells in the body of oxygen. According to the U.S. Chemical Safety and Hazard Investigation Board, in humans, "breathing an oxygen deficient atmosphere can have serious and immediate effects, including unconsciousness after only one or two breaths. The exposed person has no warning and cannot sense that the oxygen level is too low." In the US, at least 80 people died due to accidental nitrogen asphyxiation between 1992 and 2002. Hazards with inert gases and the risks of asphyxiation are well established. An occasional cause of