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
Green Lantern: Circle of Fire Green Lantern: Circle of Fire "Circle of Fire" is a story arc that ran through a two-issue, self-titled comic book miniseries and five one-shot comics starring Green Lantern (Kyle Rayner) that was published by DC Comics in October 2000. It consists of two bookend issues, titled "Green Lantern: Circle of Fire", and five issues in between in each of which a brand new Green Lantern Corps member pairs up with an established DC superhero. These other heroes include Power Girl, Adam Strange, Firestorm, the Atom, and Kyle Rayner. The bookend issues and two of the team-up issues were written by