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The minimum typical protection factor of the fallout shelters in US cities is 40 or more. In many cases these shelters are nothing more than the interior of pre-existing well-built buildings that have been inspected, and following their protection factors being calculated, re-purposed as fallout shelters. [126] [99] [127] [128]
In 1950, the National Security Resources Board created a 162-page document outlining a model civil defense structure for the US. Called the "Blue Book" by civil defense professionals in reference to its solid blue cover, it was the template for legislation and organization that occurred over the next 40 years. [5]
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During the early 1980s, nuclear war became a common fear, and some survivalists constructed fallout shelters. In 1999, many people purchased electric generators , water purifiers, and several months or even years worth of food in anticipation of widespread power outages because of the Y2K computer-bug .
In 1950, the National Security Resources Board created a 162-page document outlining a model civil defense structure for the U.S. Called the "Blue Book" by civil defense professionals in reference to its solid blue cover, it was the template for legislation and organization for the next 40 years. [15]
The fallout radiation advice in Protect and Survive was based on 1960s fallout shelter experiments [5] summarised by Daniel T. Jones of the Home Office Scientific Advisory Branch [6] in his report, The Protection Against Fallout Radiation Afforded by Core Shelters in a Typical British House which was published in Protective Structures for ...
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The Federal Civil Defense Administration (FCDA) was organized by President Harry S. Truman on December 1, 1950, through Executive Order 10186, [1] and became an official government agency via the Federal Civil Defense Act of 1950 on 12 January 1951. [2]