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
Green Fire (novel) then are obliterated. MacRobert, who has previously refused offers from either corporation, is placed in charge of Independent. He disposes of Jevic in time to end the destruction. Basil Davenport, reviewing the novel for "The New York Times", faulted the story's "psychological crudities," but noted that "Green Fire" was also marked by "some striking concepts, and a duel of powers with real suspense." Everett F. Bleiler faulted the novel for defects including "poor exposition," noted that Jevic was modeled on Nikola Tesla, and found the fictionalized account of his early life "fascinating." Green Fire (novel) Green Fire is a science