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
Fire breathing many inherent risks to the health and safety of the practitioners. Fire breathing has a wider range of risks due to the required technique to create the effect. Having an actively spotting trained safety assistant with an appropriate fire blanket and fire extinguisher is an appropriate best practice when fire breathing and is a mandatory clause in most insurance policies for professional fire breathers. To increase safety, fire breathers must avoid highly combustible fuels such as alcohol, spirit-based fuels, and most petrochemicals, instead using safer combustibles with a higher flash point (>50 °C). Due to its relatively safe (≈90 °C)