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
Cutting extinguisher also been used successfully in combination with positive pressure ventilation (PPV) fans. The Swedish contingencies agency recently published a report on 10 years user experience of the Cobra cutting extinguisher in Sweden. Pyrolance LLC has a licence signed 2006 with CCS AB to manufacture and market a 'Americanized' product similar to the CCS- Cobra 'Cutting Extinguisher'. PyroLance is a firefighting system that cools and contains fires and fire gases. Utilizing a combination of high-pressure water and a nonsparking abrasive material, the PyroLance pierces exterior structures, and blankets the thermal layers inside with a fog of atomized water. The PyroLance introduces