Campden tablets are also useful in decontamination and neutralization after exposure to tear gas. Initial treatment of poisoning may include gastrointestinal decontamination with activated charcoal. The personnel decontamination system is equipped with sanitiser and soap dispenser. This also helps in comprehensive debridement and local decontamination of the affected implant. Data were obtained on personnel protection, decontamination, and immunization. Japanese media has reported that workers indicate that standard decontamination procedures are not being observed. Dredged material can be reused after appropriate decontamination. The water decontamination and water recycling systems are now both functional. ECBC has a history of developing technologies in the areas of detection, protection and decontamination. For staff, there are areas for preparation and decontamination. The raft containing decontamination materials was intentionally sunk. Activated charcoal should also be administered if co-ingested drugs warrant decontamination. Other incidents involving decontamination of vehicles have been identified. The mass manufacturing of the portable decontamination chamber is now done by Dass Hitachi Limited. Oral administration can be used for gut decontamination (e.g., in hepatic encephalopathy).