Jan 15, 2016 · The Cold War shelter was built in 1982, a period of heightened Cold War tension following Russia's invasion of Afghanistan A DIY nuclear fallout shelter built in a back garden during heightened... Cold War, the open yet restricted rivalry that developed after World War II between the United States and the Soviet Union and their respective allies. It was waged on political, economic, and propaganda fronts and had only limited recourse to weapons. The term was first used by writer George Orwell.
$\begingroup$ My high school (built in 1960) had "fallout shelter" signs, which as a joke. The shelters were basically just the crawl spaces and pipe chases under the floors, surrounded by the foundation. These spaces all had air vents, to the outside, to prevent moisture build up.
Between 1946 and 1991 the United States, the Soviet Union, and their allies were locked in a long, tense conflict known as the Cold War. Though the parties were technically at peace, the period was characterized by an aggressive arms race, proxy wars, and ideological bids for world dominance.