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
Xuxa Park fire As Xuxa and her dancers were performing a show-closing musical number, a small fire started in the set's mechanical "spaceship" (through which Xuxa would normally have exited the stage in another 2 minutes). For a few seconds, they continued their musical number, unaware of what was happening behind them. An alert stagehand quickly appeared with a small fire extinguisher and attempted to extinguish the flames, but suddenly the fire erupted violently, engulfing the "spaceship," and he was forced to retreat as others on stage also began to flee. The fire grew and spread quickly and intensively as children, dancers, stagehands,