# 1953 CIVIL DEFENSE FILM OPERATION DOORSTEP NEVADA ATOMIC BOMB TEST 28072

Made in 1953, "Operation Doorstep" shows the Upshot-Knothole Annie nuclear weapons test conducted by the United States as part of Operation Upshot-Knothole. This took place at the Nevada Test Site on 17 March 1953, and was nationally televised. The broadcast as well as this film suggests that it is possible to survive an a-bomb blast, as long as you have a good fallout shelter or other protection. Unfortunately, just a few years after this film was made, larger and larger yield nukes and the H-bomb made the proposition of survival quite unlikely. Operation Doorstep was a civil defense study conducted by the Federal Civil Defense Administration in conjunction with the Annie tests. It studied the effect of the nuclear blast on two wooden frame houses, fifty automobiles and eight bomb shelters designed for residential use. The film shows blast and thermal effects on mannequins, automobiles, and wooden frame houses, simple basement shelters and complex underground, reinforced-concrete shelters. Soldiers involved in the Desert Rock V exercise are seen in their foxholes with Civil Defense leaders. Observers on "News Nob" are shown illuminated by the explosion. Stop-motion views are shown of a house blown apart by the blast wave. The administration concluded that if windows were left open to prevent the car collapsing on its occupants a car would be "relatively safe" from a small nuclear bomb if at least ten blocks away from the hypocenter. The homes in the study were constructed…

- Kind: Film
- Genres: Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/28072OperationDoorstep)
- Licence or status: none stated by the archive
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/28072OperationDoorstep?play=1)