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
Chubb Fire Campbell copper shell extinguisher was installed in the RAC Club in London. This pure copper extinguisher was very popular where appearance was important. 1964 The business was acquired by Chubb and Sons but continued to operate from Horsham as Read and Campbell until the formation of Chubb Fire Security Limited in 1971. Minimax, started in England in 1903, very soon became world renowned for their conical extinguisher known as 'The Minimax'. This was until they joined The Pyrene Company in 1955, their unique shaped extinguishers were a familiar sight in most public buildings and offices. 1903 Minimax Limited opened their