Fire extinguisher class D fire extinguisher agents available; some will handle multiple types of metals, others will not. TMB was used experimentally by the US Air Force, specifically with regard to B-52 engine assemblies, and was tested in modified 10-gallon wheeled CBM extinguishers. Other agents were added to suppress the methanol flare up, such as chlorobromomethane (CBM), Halon 2402, and Halon 1211, with varied success. Halon 1211 was the most successful, and the combined TMB pressurized with halon 1211 and nitrogen was called Boralon was used experimentally by the Los Alamos National Laboratory for use on atomic metals, using sealed cylinder extinguishers
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