Fire extinguisher had been developed by DuPont and the US Army in 1954. Both 1211 and 1301 work by inhibiting the chain reaction of the fire, and in the case of Halon 1211, cooling class A fuels as well. Halon is still in use today but is falling out of favor for many uses due to its environmental impact. Europe and Australia have severely restricted its use, since the Montreal Protocol of 1987. Less severe restrictions have been implemented in the United States, the Middle East, and Asia. Internationally there are several accepted classification methods for hand-held fire extinguisher. Each classification is
Bradford City stadium fire warmer; one of them ran to the back of the stand for a fire extinguisher but found none. A police officer shouted to a colleague for an extinguisher. However, his call was misheard and instead the fire brigade were radioed. The call was timed at 3:43 pm. However, the fire escalated rapidly and flames became visible, and so police started to evacuate the stand. The blaze began to spread; the roof and wooden stands were soon on fire. One eyewitness, Geoffrey Mitchell, told the BBC: "It spread like a flash. I've never seen anything like it. The smoke was choking.