Fire extinguisher in the early 60s and Purple-K being developed by the US Navy in the late 1960s. Manually applied dry agents such as graphite for class D (metal) fires had existed since WWII, but it wasn't until 1949 that Ansul introduced a pressurized extinguisher using an external CO2 cartridge to discharge the agent. Met-L-X (sodium chloride) was the first extinguisher developed in the US, with graphite, copper, and several other types being developed later. In the 1970s, Halon 1211 came over to the United States from Europe where it had been used since the late 40s or early 50s. Halon 1301
Colectiv nightclub fire club was coated on the inside with foam that was used for soundproofing. The foam was extremely flammable. In addition, the club did not have fire sprinklers, or a way to shut off the electricity in an emergency. The club had only a single fire extinguisher, which would have been too small for such a fire. At the time of the fire, the club had 300 to 500 people inside; Club Colectiv was only authorized for 80 seats. On 2 November, prosecutors charged the club's owners—Alin Anastasescu, Paul Gancea, and Costin Mincu—with negligent homicide and negligent bodily harm, and detained