Duck and cover

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For other uses, see Duck and cover (disambiguation).
In the 1952
United States civil defense film, Duck and Cover
, "Bert the Turtle" teaches schoolchildren how to protect themselves during a nuclear attack.
Duck and cover drill in a sсhool in Brooklyn in 1962

"Duck and cover" is a method of personal protection against the effects of a nuclear explosion. Ducking and covering is useful in offering a degree of protection to personnel located outside the radius of the nuclear fireball but still within sufficient range of the nuclear explosion that standing upright and uncovered is likely to cause serious injury or death. In the most literal interpretation, the focus of the maneuver is primarily on protective actions one can take during the first few crucial seconds-to-minutes after the event, while the film of the same name and a full encompassing of the advice also cater to providing protection up to weeks after the event.

The countermeasure is intended as an alternative to the more effective

target/citywide emergency evacuation when these crisis relocation programs would not be possible due to travel and time constraints. Maneuvers similar, but not identical, to Duck and Cover are also taught as the response to other sudden destructive events, such as an earthquake or tornado, in the comparable situation where preventive emergency evacuation
is similarly not an option, again, due to time constraints. In these analogously powerful events, Drop, Cover and Hold on likewise prevents injury or death if no other safety measures are taken.

As a

likely be about a few minutes prior to the nuclear weapon arriving.[dubious – discuss
]

Procedure

During a surprise nuclear attack

Dropping immediately and covering exposed skin provide[s] protection against blast and thermal effects ... Immediately drop facedown. A log, a large rock, or any depression in the earth's surface provides some protection. Close eyes. Protect exposed skin from heat by putting hands and arms under or near the body and keeping the helmet on. Remain facedown until the blast wave passes and debris stops falling. Stay calm, check for injury, check weapons and equipment damage, and prepare to continue the mission.

— 
US Army field manual FM 3–4 Chapter 4.[1]

Immediately after one sees the first flash of intense heat and light of the developing nuclear fireball, one should stop, get under some cover and drop/duck to the ground. There, one should assume a prone-like position, lying face-down, and to afford protection against the continuing heat of the explosion further cover exposed skin and the back of one's head with one's clothes; or, if no excess cover or cloth is available, one should cover the back of one's head and neck with one's hands.

Similar instructions, as presented in the Duck and Cover film, are contained in the British 1964 public information film Civil Defence Information Bulletin No. 5[2] and in the 1980s Protect and Survive public information series.[3] Children in the Soviet Union likewise received almost identical classes on countermeasures, according to Inside the Kremlin's Cold War authors Zubok and Pleshakov.[4]

In U.S. Army training, soldiers are taught to fall down immediately and cover their face and hands in much the same way as is described above.[1]

In the classroom scene of the

building collapse, brought about by blast pressures generated during the conventional bombing of cities in World War II.[5][6][7][8][b]

When warning is given

Under the conditions where some warning is given, one is advised to find the nearest

shelter in place
. Sheltering is, as depicted in the film, also the final phase of the "duck and cover" countermeasure in the surprise attack scenario.

Cursory analysis

The "duck and cover" countermeasure could save thousands. This is because people, being naturally inquisitive, would instead run to windows to try to locate the source of the immensely bright flash generated at the instant of the explosion. During this time, unbeknownst to them, the slower moving

pane of window glass when the blast wave arrived, those in his company who were had serious blast injury wounds, with broken glass and pieces of wood stuck into them.[12] The Hiroshima and Nagasaki explosions were "atom bombs" which are much weaker than nuclear hydrogen devices, also known as "H-bombs", by a factor of 1000 or more. Two Japanese cities, Hiroshima and Nagasaki, were hit by bombs in 1945 that had a force equivalent to 16 kilotons (16,000 tons) and 21 kilotons of TNT, respectively. On 1 November 1952, the first hydrogen bomb was exploded by the United States at Enewetak atoll in the Marshall Islands. "Mike", codename for the bomb, released energy equal to around 10 megatons — or 10 million tons of TNT. [13] In 1961, the Tsar bomb was exploded by the Soviet Union, producing an explosion with a mass of 50 megatons— which was about 1,500 times more than the combined force of the atomic bombs fired on Hiroshima and Nagasaki. [14]

During earthquakes and tornadoes

Similar advice to "duck and cover" is given in many situations where structural destabilization or flying debris may be expected, such as during an earthquake or tornado. At a sufficient distance from a nuclear explosion, the blast wave produces similar results to these natural phenomena, so similar countermeasures are taken. In areas where earthquakes are common, a countermeasure known as "Drop, Cover, and Hold On!" is practiced.[15][16][17] Likewise, in tornado-prone areas of the United States, especially those within Tornado Alley, tornado drills involve teaching children to move closer to the floor and to cover the backs of their heads to prevent injury from flying debris.[18][19] Some US states also practice annual emergency tornado drills.[20][21]

History

The dangers of viewing explosions behind window glass were known of before the

TNT,[22] injured the eyes and faces of hundreds of people who stayed behind and looked out of their windows after seeing a bright flash, with 200 blinded by broken glass when the slower moving blast arrived.[23] Every window in the city of Halifax, Nova Scotia, was shattered in this catastrophe of human error.[24]

In the Record of the "Nagasaki A-bomb War Disaster",

air-raid shelter." A little further away, Professor Seiki of Nagasaki Medical School Hospital was building an air-raid dugout 400 m from the hypocenter of the detonation and survived.[26] Chimoto-san, who was atop a distant hill that creates the valley in which Nagasaki is located, performed the similar "hit the deck" maneuver upon seeing the bomb drop, which was notably prior to the detonation. However despite having these few seconds of relatively unique warning, he did not stay on the ground for long enough after the flash subsided, and received some translational injuries due to prematurely standing-up again, at which point the slower moving blast wave swept past him and carried him with it for a few meters.[26]

According to the 1946 book Hiroshima and other books which cover both bombings,[27] in the days between the atomic bombings of Hiroshima and Nagasaki, some survivors of the first bombing went to Nagasaki and taught others about ducking after the atomic flash and informed them about the particularly dangerous threat of imploding window glass.[28] As a result of this and other factors, far fewer died in the initial blast at Nagasaki as compared to those who were not taught to duck and cover. The general population however was not warned of the heat or blast danger following an atomic flash, due to the new and unknown nature of the atomic bomb. Many people in Hiroshima and Nagasaki died while searching the skies, curious to locate the source of the brilliant flash.[27]

When people are indoors, running to windows to investigate the source of bright flashes in the sky still remains a common and natural response to experiencing a bright flash. Thus, although the advice to duck and cover is over half a century old, ballistic glass

lacerations caused the majority of the 1000 human injuries following the Chelyabinsk meteor air burst of 15 February 2013.[29]
This response was also observed among people in the vicinity of Hiroshima and Nagasaki.[30]

Background

A Duck and Cover poster, featuring Bert the Turtle

The United States' monopoly on nuclear weapons was broken by the Soviet Union in 1949 when it tested its first nuclear explosive, the RDS-1. With this, many in the US Government, as well as many citizens, perceived that the United States was more vulnerable than it had ever been before. In 1950, during the first big Civil Defense push of the Cold War—and coinciding with the Alert America! initiative to educate Americans on nuclear preparedness,[31] the adult-orientated Survival Under Atomic Attack was published. It contains "duck and cover" or more accurately, cover and then duck advice without using those specific terms in its Six Survival Secrets For Atomic Attacks section. 1. Try to Get Shielded 2. Drop Flat on Ground or Floor 3. Bury Your Face in Your Arms ("crook of your elbow").[32] The child-oriented film Duck and Cover was produced a year later by the Federal Civil Defense Administration in 1951.

Civil Defense drills that every US citizen, from children to the elderly,[dubious – discuss] was encouraged to practice[citation needed] so that they could be ready in the event of nuclear war
.

Education efforts on the effects of nuclear weapons proceeded with stops-and-starts in the US due to competing alternatives. In a once classified, 1950s era, US

nuclear stockpile, the efficacy of both would begin to enter a diminishing returns trend.[34] When more became known about the cost and limitations of the Nike Zeus system, in the early 1960s the head of the department of defense under president John F. Kennedy
,
benefit-cost ratio compared to other options. For instance, fallout shelters would save more Americans for far less money.[citation needed
]

Efficacy during a nuclear explosion

1954 test shot Nectar of
LD50s would be around 8 and 12 km respectively.[36][38]
This assumes personnel did not take any prompt countermeasures, instead standing still, absorbing the entire light energy emitted over the ≈20 seconds of emission.

Within a considerable radius from the surface of the

lightning storm, thus at the distances that the advice would be most effective, there would be more than ample amounts of time to take the prompt countermeasure of 'duck and cover' against the blast's direct effects and flying debris.[44] For very large explosions it can take 30 seconds or more, after the silent moment of flash, for a potentially dangerous blast wave over-pressure to arrive at, or hit, one's position.[45]

The graphs of lethal ranges of weapon effects as a function of yield, that are commonly encountered,

attenuating effects from urban terrain masking, e.g. skyscraper shadowing, and so on. Therefore, they are thus considered to present an overestimate of the lethal ranges that would be encountered in an urban setting in the real world,[46] with this being most evident following a ground burst with explosive yield similar to first generation nuclear weapons.[46][47]

Hiroshima Peace Park, the basement of which Eizo Nomura was in on August 6, 1945 when Little Boy exploded overhead. The building was built as a kimono shop in 1929 and was one of the "about 50" other "fair", or moderately strong, reinforced concrete buildings in central Hiroshima that remained standing following the blast and firestorm and in good structural condition, due to having a high percentage of window area which relieved blast pressure on the structural frames.[48][49]

To highlight the effect that being indoors, and especially below ground can make, despite the lethal open air radiation, blast and thermal zone extending well past her position at Hiroshima,

ground zero.[52] Nomura, who was in the basement of what is now known as the rest house, also a reinforced concrete building,[52] lived into his early 80s.[53][54][55]

In contrast to these cases of survival, the unknown person sitting outside on the steps of the Sumitomo Bank next door to the Bank of Hiroshima on the morning of the bombing—and therefore fully exposed—suffered what would have eventually been lethal third- to fourth-degree burns from the near instant nuclear weapon flash if they had not been killed by the slower moving blast wave when it reached them approximately one second later.[56]

Blast effects

Outdoors

To elucidate the effects on lying flat on the ground in attenuating a weapons

Hiroshima maidens, when recounting the bombing in an interview in 1999, said that she was outdoors and less than 1 mile from the hypocenter of the Little Boy bomb. Upon observing the nuclear weapons silent flash she quickly lay flat on the ground, while those who were standing directly next to her, and her other fellow students, had simply disappeared from her sight when the blast wave arrived and blew them away.[57][58]

Position of the body can have a considerable influence in protection from blast effects. Lying

posterior surface of the body (feet) toward the source of the blast.[59]

The human body is more resistant to sheer overpressure than most buildings, however, the powerful winds produced by this overpressure, as in a

hurricane, are capable of throwing human bodies into objects or throwing debris at high velocity, both with lethal results, rendering casualties highly dependent on surroundings.[39][60] For example, Sumiteru Taniguchi recounts that, while clinging to the tremoring road surface after the Fat Man detonation, he witnessed another child being blown away, the destruction of buildings around him and stones flying through the air.[61] Similarly, Akihiro Takahashi and his classmates were blown by the blast of Little Boy by a distance of about 10 meters, having survived due to not colliding with any walls etc. during his flight through the air.[62] Likewise, Katsuichi Hosoya had a near identical testimony.[63]

Indoors

During the 2013 Chelyabinsk meteor explosion, a fourth-grade teacher in Chelyabinsk, Yulia Karbysheva, saved 44 children from potentially life-threatening ballistic window glass cuts by ordering them to hide under their desks when she saw the flash. Despite not knowing the origin of the intense flash of light, she ordered her students to execute a duck and cover drill. Ms. Karbysheva, who herself did not duck and cover but remained standing, was seriously lacerated when the explosion's blast wave arrived, and window glass blew in, severing a tendon in one of her arms; however, not one of her students, who she ordered to hide under their desks, suffered a cut.[64] A follow-up study of the effects of the meteor airburst determined that the windows most prone to breaking when exposed to a blast overpressure are those of school buildings, which tend to be large in area.[65]

While the bombings of Hiroshima and Nagasaki demonstrated that the urban area of glass breakage is nearly 16 times greater than the area of significant structural/building damage, although improved building codes since then may contribute to better building survival, there would be a higher likelihood of glass breakage and therefore potential injury/death for people near windows because many modern buildings have larger windows.[66]

Flash & burn injuries

Main article: Duck and Cover (film)
See also:
coulomb repulsion, Odeillo solar furnace, Arc flash § Distance, and Anti-flash white
Anything that can cast a shadow will protect that which is shadowed from being burnt.[67][68] In this case a valve protected a portion of the bitumen[69] coated wall of a gas holder from having a line-of-sight with the nuclear fireball whereas all unshadowed surfaces were lightened, akin to a near instant "sun fading" of the coating.[70] A large number of these permanent markings were used, by extrapolating backward, to determine the exact point of detonation in the sky.[71][72][73]
vest garment of clothing, a radiant barrier, that he was wearing at the time of the explosion completely protected his stomach and lower chest from experiencing similar burns. A clearer color restored version of this picture is also available.[74]

The advice to cover one's exposed skin with anything that can cast a shadow, like the picnic blanket and newspaper used by the family in the film, may seem absurd at first when one considers the capabilities of a nuclear weapon. However, even the thinnest of barriers such as cloth[75][76][77] or plant leaves would reduce the severity of burns on the skin from the thermal radiation with the flash light, similar in average emission spectrum/color to sunlight.[78][79][80] The thermal radiation emits in the ultraviolet, visible light, and infrared range but with a higher light intensity than sunlight, and this combination of light rays is capable of delivering radiant burning energy to exposed skin areas.[81][82][83] As the time-to-rise at peak and total duration of the emittance pulse of this burning thermal radiation is both prolonged and increases with larger explosive yield,[84] it is usually at least a few seconds long for all high yield stockpiled weapons, creating the potential for protective countermeasures.[85]

High importance is given to closing eyelids and covering the eyes as temporary or permanent flash blindness is a risk potential without this covering, especially at night.[86]

A photograph taken about 1.3 km from the

timber it is largely dependent on the depth of char.[88][89][90] While the propagating fires in both Japanese cities were almost exclusively ignited by the blast wave overturning charcoal cooking-braziers and similar secondary events, thermal flash-fires from untreated fabric and timber in the urban environment is considered potentially the widest destructive effect of the higher yield explosive devices.[84]
The
Nevada test site used for testing nuclear devices had a dry desert environment with low humidity, which repeatedly demonstrated the flash-combustion effect during tests. Many investigative films made on location there, such as The House in the Middle and others, focused on the combustion of fabrics and clothing.[75]

In the only human accounts at these high luminous intensities that are not of the more common Arc flash accidents, a number of the Hiroshima Maidens survived despite their close proximity to the explosion and in a range where the flash-fire of their customary Japanese summer attire, made of thin kimono cloth, was near instantaneous. As their clothing combusted, some of the Maidens performed an incomplete stop, drop and roll in an effort to extinguish the flames.[91]

Initial nuclear radiation

See also: Neutron emission § Neutron emission in fission, Armed Forces Radiobiology Research Institute, Dosimetry, Orders of magnitude (radiation), Dose fractionation, Radiation-induced cancer, and Treatment of infections after exposure to ionizing radiation

While not designed for those faced with low-yield

life-threatening in the short-medium term, ducking and covering would nevertheless slightly reduce exposure to the initial gamma rays, specifically the portion emitted after the first flash of visible light.[92] The initial gamma rays are defined as those emitted from the fireball & following mushroom cloud which can reach personnel on the ground for a total of approximately 1 minute, at which point the intensity of the radiation has diminished and the atmosphere itself is thick enough to act as full shielding.[93][94][95][96]

As approximately half of these gamma rays are emitted in the first second and the other half, over the following 59[97] alongside gamma rays being mostly emitted in a straight line, people lying on the ground will more likely have obstacles serving as radiation protection such as building walls, foundations, car engines, etc. between their bodies and the radiation emitted from both the fireball and the accompanying lower levels of radiation that continue to arrive at the ground for about 1 minute, during the mushroom cloud phase, which is termed "cloudshine".[98] It would also give protection from the even smaller fraction of radiation that changes direction and is randomly reflected and scattered by the air/"skyshine".[99] Approximately "One and one half inches"/37 mm of steel will reduce gamma dose by half.[100] Its half-value thickness.

The effective gamma ray energy of the cloudshine is not especially high, 200

KeV.[101]

Unlike the relatively

thermonuclear weapons) are not expected to result in very many such injuries – as the range at which the ionizing radiation from higher yield devices is of primary concern, is already well inside the hyper-lethal blast and flash burn areas.[102][38][42]

Delayed nuclear radiation, "fallout"

See also:
Neptunium-239, Iodine-131, Black Rain (novel), Potassium iodide, Human decontamination, Project 4.1, Nuclear War Survival Skills, and Textbook of Military Medicine

Apart from the intrinsic "prompt effects" of nuclear detonations, that of thermal flash, blast and initial radiation releases, if any part of the fireball of the nuclear detonation contacts the ground, in what is known as a

surface burst, another, comparatively slowly increasing, radiation hazard will also begin to form in the immediate area.[103][104]

Putting aside the possibility of the detonation occurring during an already established heavy rain-storm, the formation of this life-threatening "

precipitate-out of the mushroom cloud, falling back to the surface of the earth, near to the point of detonation, over the next few minutes and hours.[105]

While the duck and cover countermeasure, in its most basic form, offers a small to negligible protection against

fallout, the technique assumes that after the effects of the blast and initial radiation subside, with the latter of which being no longer a threat after about "twenty seconds" to 1 minute post detonation,[93][99] a person who ducks and covers will realize when it is wise to cease ducking and covering (after the blast and initial radiation danger has passed) and to then seek out a more sheltered area, like an established or improvised fallout shelter to protect themselves from the ensuing potential local fallout danger, as depicted in the film
.

After all, "Duck and Cover" is a first response countermeasure only, in much the same way that "Drop, Cover and Hold On" is during an earthquake, with the advice having served its purpose once the earthquake has passed, and possibly other dangers—like a tsunami or fallout—may be looming, which then require movement to high ground and radiation protection, respectively.

However, if such a shelter is unavailable, the person should then be advised to follow the

sealed tight basement, or internal room, for a number of hours, with the oxygen supply available in such a scenario being more than sufficient for 3+ hours in even the smallest average room, under the assumption that the improvised seal is perfect, until carbon dioxide levels begin to reach unsafe values and necessitate room unsealing for a number of minutes to create a room air change.[108][109]

In the era the advice was originally given, the most common nuclear weapons were weapons comparable to the US

surface burst.[115] For example, in the Operation Crossroads tests of 1946 on Bikini Atoll
, using two explosive devices of the same design and yield, the first, Test Able (an air burst) had little local fallout, but the infamous Test Baker (a near surface shallow underwater burst) left the local test targets badly contaminated with radioactive fallout.

Widespread radioactive fallout itself was not recognized as a threat among the public at large before 1954, until the widely publicized story of the 15-megaton surface burst of the experimental test shot

acute radiation sickness with varying degrees of seriousness[116]
and due to complications in the treatment of the ship's radio operator months after the exposure, resulted in his death.

It is, however, unlikely that a well-funded belligerent with nuclear weapons would waste their weapons with fuzing to explode below or on the surface, as both test shot Baker and Castle Bravo were respectively. Instead, to maximize the range of city blast destruction and immediate death, an air burst is preferred,[115] as the ≈500 meter explosion heights of the only nuclear weapons used on cities, Little Boy and Fat Man also attest to.[117] Moreover, with air bursts the total amount of radiation contained in the fallout, in units of activity/becquerel, is somewhat less than the total that would be released from a surface or subsurface burst, as in comparison, depending on the height of burst, little to no neutron activation or neutron induced gamma activity of soil occurs from air bursts.[118] Therefore, the initial danger from concentrated local/'early'

fallout.[119] An air burst at optimum height will produce a negligible amount of early fallout.[120]

A notable comparison to underline this is found when one compares the 50 megaton air-burst Tsar Bomba, which produced no concentrated local/early fallout and thus no known deaths from radiation, with the surface burst of the 15 megaton Castle Bravo, which in comparison, due to the local fallout produced, was implicated in the death of 1 of 23 crew on the Lucky Dragon and made the entire Bikini Atoll unfit for further nuclear testing until enough time elapsed and the intensity of the radiation field had decayed to acceptable levels.[c]

Operation Doorstep mother and daughter mannequin pair in an improvised basement lean-to shelter prior to testing in Upshot-Knothole Annie. To shelter-in-place in such an area would offer, in a number of outdoor dose rates, an adequate fallout radiation protection factor (PF) or "dose reduction factor" of 20 or more.[44] More effective basement spaces did/do exist however, of "10 million" homes assessed in 1968, 500,000 US basements were found to have a PF-40.[99][122]

Furthermore, regardless of if a nuclear attack on a city is of the surface or air-burst variety or a mixture of both, the advice to

shelter in place (or "buttoning up" as it was known then) is an effective strategy in mitigating the potentially serious health effects of local fallout.[124]

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]

A protection factor of at least 40 means that the

radiation shielding provided by the shelter reduces the radiation dose experienced by at least 40 times that which would be experienced outside the shelter with no shielding. "Protection factor" is equivalent to the modern term "dose reduction factor".[44]

neptunium-239, that are generated from the neutron capture of U-235 and Pu-239 respectively, are regarded as the leading hazardous radioisotopes in the first hour-to-week period following nuclear fallout, with Np-239 dominating "the spectrum for several days".[131][132]

During the first hour after a nuclear explosion, radioactivity levels drop precipitously. Radioactivity levels are further reduced by about 90% after another 7 hours and by about 99% after 2 days.[106] An accurate rule of thumb, applicable in the time-period of days to a few weeks post-detonation which approximates the radioactive dose rate generated by the decay of the myriad of isotopes present in nuclear fallout, is the "7/10 rule".[133][105] The rule states that for each 7-fold increase in time the dose rate drops by a factor of 10.[134] For example, assuming the fallout process has ended 24 hours post detonation and the dose rate would be lethal if a few hours of exposure occurred, 50 roentgens per hour, then 7 days after detonation the dose rate will be 5 R/hr and 49 days after detonation (7×7 days) the dose rate will be 0.5 R/hr at which point no special precautions would need to be taken and venturing outside into that dose rate for an hour or two would pose a close to negligible health hazard,[133][135] thus permitting an evacuation to be done with acceptable safety to a known contamination free zone. Following a surface-burst nuclear detonation, approximately 80 percent of the fallout would be deposited on the ground during the first 24 hours.[45]

Some agencies that promoted "evacuate immediately" guidance as a response to potentially lethal fallout arriving, advice which may have been influenced by these agencies assuming simplistic single wind-driven

Gaussian shaped fallout contours would be representative of reality, have since retracted this advice. This can actually result in higher radiation exposures as it would put people outdoors and in harm's way when the radiation levels would be highest. The Modeling and Analysis Coordination Working Group (MACWG) – which was set up to resolve conflicting advice given by various agencies, has reaffirmed that the best blanket advice that would reduce the number of casualties by the greatest amount is: "Early, adequate sheltering followed by informed, delayed evacuation."[66]

Expert advice published in the 2010 document Planning Guidance for Response to a Nuclear Detonation is to

situational awareness that may be optimistic to assume following the shock of a nuclear detonation. If a building with a PF of 20 or more is nearby, such as the fallout shelters depicted in the film, in the vast majority of fallout circumstances, it would not be advisable to leave it until 3+ hours have elapsed following the initial arrival of the local fallout.[139][140]

Following a single IND (improvised nuclear device) detonation in the US, the

UAV) aircraft on material intelligence gathering missions,[146] which would also follow within tens of minutes to at most hours after the detonation.[d]

Once a general outline and direction of the fallout is determined, disseminating this information to citizens sheltering-in-place would soon follow, by means of

smart phones being regarded as an area of interest so that survivors do not inadvertently evacuate downwind further into harm's way.[147][148] A number of questions the affected public are likely to have after a nuclear detonation have been compiled and pre-answered to help communications in the immediate aftermath.[149][150]

Nuclear electromagnetic pulse, non-lethal

See also: National Response Scenario Number One

In respect to the other non-lethal weapon effects from an IND detonated on or near the surface, the detonation's blast wave would likely produce a momentary electric grid

emergency responders
are made to give them priority and bar access to all other individuals, then it may be an effective service.

The Civil Defense (CD) shelters, as depicted in the film, were stocked for such an eventuality. They contained among other things, at least one ruggedized

CDV-715 radiation survey meter and one CD emergency radio receiver
which would respectively be used to facilitate a safe delayed evacuation, regardless of outside help though if communications continued, the radio receiver was to inform them of the outside situation as it developed.

Long-term survival

See also:
Wood Gas Generator, and Bikini Atoll § Current habitable state

The dubious assumption that "only the cockroaches" would survive the post-war fallout environment was frequently used in an attempt to criticize Duck and Cover during the height of the Cold War, contextually at a time when discussion of a total war involved the much greater US-Soviet arsenal of nuclear weapons that were then in existence. However even at that time, this assumption was shown to be misled, as scientifically detailed in areas including the 1988 book Would the Insects Inherit the Earth and Other Subjects of Concern to Those Who Worry About Nuclear War.[151][152][153]

In material terms, the primary life-threatening risk survivors and downwinders could face in the long-term after a nuclear explosion or war, is the "nuclear famine" issue, the potential continuation of hostilities by conventional warfare and radioactive contamination of the food and water supplies, disrupting the normal distribution and consumption, of these vital goods.

Cold War

WWII. Papers such as On Reorganizing After Nuclear Attack,[154] and Survival of the relocated population of the U.S. after a nuclear attack by Nobel Prize winner, Eugene Wigner, detail the thought and attention that went into long-term survival, relocation and reconstruction.[155]

Numerous

DPTA all proven effective.[168]

Comparable binding/chelation treatment systems, developed and deployed due to the Fukushima reactor-water decontamination mandate,[169] includes the mobile reverse osmosis Landysh water treatment ship, the zeolite-rock based "Actiflo",[170] the "SARRY" ion exchange cesium removal system, based on silicotitanate "IONSIV" crystalline rock,[171][172][173][174][175] and most recently the 62 multi-nuclide removal system (NURES), frequently referred to as the Advanced Liquid Processing System (ALPS).[176][177][178][179][180] In 2016 tritiated water also began to be filtered.[181][182]

Researchers at the

cellulosic biofuel production (which typically already creates edible sugars/xylitol from inedible cellulose) as an intermediate product before the final step of alcohol generation.[187][188]

Historical and psychological assessment

Some historians and filmmakers, exemplified by the 1982 The Atomic Cafe, have thus far sought to dismiss civil defense advice as mere propaganda, despite, as other historians have found, detailed scientific research programs behind the much-mocked government civil defense pamphlets of the 1950s and 1960s, including the prompt advice of ducking and covering.[128]

In U.S. Army training, soldiers are taught to immediately fall down, covering face and hands in much the same way as is described by the advice to duck and cover.[189]

The exercises of Cold War civil defense are seen by historian Guy Oakes in 1994, as having less practical use than psychological use: to keep the danger of nuclear war high on the public mind, while also attempting to assure the American people that something could be done to defend against nuclear attack.[190]

Moreover, civil defense was not solely a US-UK or

Swiss civil defense network has an overcapacity of nuclear fallout shelters for the country's population size, and by law, new homes must still be built with a fallout shelter as of 2011.[192][193]

Tornadoes

See also:
Tornado drill
evidence based
safety drills, they teach effective countermeasures and therefore increase survival rates if/when a tornado hits.

Ducking and covering does have certain applications in other, more natural disasters. In states prone to

earthquakes
are commonplace. Ducking and covering in either scenario would theoretically afford significant protection from falling or flying debris.

Earthquakes

See also: Nuclear bunker buster

In an

Red Cross advises[198]
it is the appropriate emergency response to an earthquake in the United States.

See also

General

Long-term survival

References

Informational notes

  1. nap of the earth flying and the Fractional Orbital Bombardment System
  2. ^ The building in which the table/Morrison shelter is located was advised to be as free from combustible materials as possible, as the potential of a fire in the debris, post-collapse, would be fatal to those sheltering inside.
  3. fission product fallout being generated around the atoll. This made permanent above ground habitation without remediation unwise for a decade or so; it was thus resettled in 1968. The inhabitants lived there again from 1968 to 1978, abandoning the atoll in 1978. As of 2014, the atoll has had infrequent inhabitants since the 1990s, mainly for tours – a return to permanent safe habitation would require locally produced and consumed plant food to be grown with fertilizer, or alternatively, only imported plant food to be eaten.[1] [2]
  4. natural disasters
    , survivors should not exit shelter unless absolutely necessary in the time period before being informed of the fallout situation, or alternatively, stay in shelter until sufficient time has elapsed, +24 hrs for a delayed evacuation to take place.

Citations

  1. ^
    US Department of Defense. 21 February 1996. Archived from the original
    on 13 March 2013.
  2. ^ "Civil Defence Bulletin – No. 5" (video). YouTube. 25 December 2006. Retrieved 11 March 2013.[dead YouTube link]
  3. ^ "Protect and Survive: Action After Warnings 28:27–28:50 (part 10)" (video). YouTube. 9 December 2012. Archived from the original on 2021-12-21. Retrieved 15 April 2015.
  4. ISBN 9780814775233
    – via Google Books.
  5. ^ "Air Raid Shelter Protection - History of the Battle of Britain - Exhibitions & Displays - Research - RAF Museum".
  6. ^ "Morrison Shelters".
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