A bomb shelter is a structure designed to provide protection against the effects of a bomb.
A bomb shelter is a structure designed to provide protection against the effects of a bomb.
Different kinds of bomb shelters are configured to protect against different kinds of attack and strengths of hostile explosives.
An air raid shelter is a structure built to protect against bomber planes dropping bombs over a large area. These were commonly seen during World War II, such as the "Anderson shelters" of the United Kingdom.
A fallout shelter is a shelter designed specifically for a nuclear war, with thick walls made from materials intended to block the radiation from fallout resulting from a nuclear explosion. Many such shelters [1] were constructed as civil defense measures during the Cold War. A blast shelter protects against more conventional bomb blasts. Its main purpose is to protect from shock waves and overpressure and also from earthquake.
While these forms of bomb shelters are equally amenable to civilians and military use, a bunker is more commonly associated with military use. A bunker may be hastily assembled as part of an ongoing military advance, or to hold a line. Bunkers have also been popular with the survivalism subculture.
While military units have long built defensive structures to protect against various kinds of hostile bombardment, the use of the phrase "bomb shelter" can be traced at least as far back as 1833. A dictionary from that year defines a "casement" as "a bomb-proof shelter for soldiers in garrison". [2] In 1881, the United States War Department issued a report in which it indicated that the defenses of Charleston, South Carolina included construction at Fort Moultrie of:
...eleven permanent gun-platforms and breast-height walls, bonnets on the traverses, a portion of the masonry and all the earth covering of the bomb-proof shelter, the postern gallery, a part of the earth covering of the magazines, and an earthen cover face on the channel front. [3]
The shortening of this phrase to the conventional "bomb shelter" appears in print at least as early as 1895. [4]
Civil defense or civil protection is an effort to protect the citizens of a state from human-made and natural disasters. It uses the principles of emergency operations: prevention, mitigation, preparation, response, or emergency evacuation and recovery. Programs of this sort were initially discussed at least as early as the 1920s and were implemented in some countries during the 1930s as the threat of war and aerial bombardment grew. Civil-defense structures became widespread after authorities recognised the threats posed by nuclear weapons.
A fallout shelter is an enclosed space specially designated to protect occupants from radioactive debris or fallout resulting from a nuclear explosion. Many such shelters were constructed as civil defense measures during the Cold War.
Nuclear warfare, also known as atomic warfare, is a military conflict or prepared political strategy that deploys nuclear weaponry. Nuclear weapons are weapons of mass destruction; in contrast to conventional warfare, nuclear warfare can produce destruction in a much shorter time and can have a long-lasting radiological result. A major nuclear exchange would likely have long-term effects, primarily from the fallout released, and could also lead to secondary effects, such as "nuclear winter", nuclear famine, and societal collapse. A global thermonuclear war with Cold War-era stockpiles, or even with the current smaller stockpiles, may lead to various scenarios including the extinction of the human species.
Nuclear fallout is the residual radioactive material propelled into the upper atmosphere following a nuclear blast, so called because it "falls out" of the sky after the explosion and the shock wave has passed. It commonly refers to the radioactive dust and ash created when a nuclear weapon explodes. The amount and spread of fallout is a product of the size of the weapon and the altitude at which it is detonated. Fallout may get entrained with the products of a pyrocumulus cloud and fall as black rain. This radioactive dust, usually consisting of fission products mixed with bystanding atoms that are neutron-activated by exposure, is a form of radioactive contamination.
A nuclear bunker buster, also known as an earth-penetrating weapon (EPW), is the nuclear equivalent of the conventional bunker buster. The non-nuclear component of the weapon is designed to penetrate soil, rock, or concrete to deliver a nuclear warhead to an underground target. These weapons would be used to destroy hardened, underground military bunkers or other below-ground facilities. An underground explosion releases a larger fraction of its energy into the ground, compared to a surface burst or air burst explosion at or above the surface, and so can destroy an underground target using a lower explosive yield. This in turn could lead to a reduced amount of radioactive fallout. However, it is unlikely that the explosion would be completely contained underground. As a result, significant amounts of rock and soil would be rendered radioactive and lofted as dust or vapor into the atmosphere, generating significant fallout.
A bunker is a defensive military fortification designed to protect people and valued materials from falling bombs, artillery, or other attacks. Bunkers are almost always underground, in contrast to blockhouses which are mostly above ground. They were used extensively in World War I, World War II, and the Cold War for weapons facilities, command and control centers, and storage facilities. Bunkers can also be used as protection from tornadoes.
A cobalt bomb is a type of "salted bomb": a nuclear weapon designed to produce enhanced amounts of radioactive fallout, intended to contaminate a large area with radioactive material, potentially for the purpose of radiological warfare, mutual assured destruction or as doomsday devices.
A bunker buster is a type of munition that is designed to penetrate hardened targets or targets buried deep underground, such as military bunkers.
The effects of a nuclear explosion on its immediate vicinity are typically much more destructive and multifaceted than those caused by conventional explosives. In most cases, the energy released from a nuclear weapon detonated within the lower atmosphere can be approximately divided into four basic categories:
Protect and Survive was a public information campaign on civil defence. Produced by the British government between 1974 and 1980, it intended to advise the public on how to protect themselves during a nuclear attack. The campaign comprised a pamphlet, newspaper advertisements, radio broadcasts, and public information films. The series had originally been intended for distribution only in the event of dire national emergency, but provoked such intense public interest that the pamphlet was published, in slightly amended form, in 1980. Due to its controversial subject, and the nature of its publication, the cultural impact of Protect and Survive was greater and longer-lasting than most public information campaigns.
Air raid shelters are structures for the protection of non-combatants as well as combatants against enemy attacks from the air. They are similar to bunkers in many regards, although they are not designed to defend against ground attack.
"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.
"Shelter Skelter" is the second segment of the thirty-third episode and the ninth episode of the second season (1986–87) of the television series The Twilight Zone. The segment follows two men living in a fallout shelter following a nuclear explosion.
The Diefenbunker, formerly known by its military designation, Canadian Forces Station Carp (CFS Carp), is a large underground four-storey reinforced concrete bunker and nuclear fallout shelter located in the rural area of Carp, Ontario approximately 30 km (19 mi) west of downtown Ottawa. Between 1957 and 1961, during the Cold War the Government of Canada led by then Prime Minister John Diefenbaker authorized the Diefenbunker to be designed and built as the Central Emergency Government Headquarters (CEGHQ Carp) in an attempt to ensure the continuity of government subsequent to a nuclear weapons attack by the Soviet Union. In 1994, CFS Carp was decommissioned and closed.
A blast shelter is a place where people can go to protect themselves from blasts and explosions, like those from bombs, or in hazardous worksites, such as on oil and gas refineries or petrochemical facilities. It differs from a fallout shelter, in that its main purpose is to protect from shock waves and overpressure instead of from radioactive precipitation, as a fallout shelter does. It is also possible for a shelter to protect from both blasts and fallout.
A blast valve is used to protect a shelter, such as a fallout shelter or bunker, from the effects of sudden outside air pressure changes. A nuclear weapon creates a shock wave, which may produce sudden pressure changes of more than an atmosphere even several kilometres from the detonation point. After the shock wave passes, a sudden negative pressure follows.
A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction. The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a pure fusion weapon remains a hypothetical device. Nuclear explosions are used in nuclear weapons and nuclear testing.
Survival Under Atomic Attack was the title of an official United States government booklet released by the Executive Office of the President, the National Security Resources Board, and the Civil Defense Office. Released at the onset of the Cold War era, the pamphlet was in line with rising fears that the Soviet Union would launch a nuclear attack against the United States, and outlined what to do in the event of an atomic attack.
Dispersal is a military practice of dispersing or spreading out potentially vulnerable military assets, such as soldiers, aircraft, ships, tanks, weapons, vehicles, and similar equipment of an army, navy, or air force. Its primary objective is to minimise any potential effects of collateral damage, from incoming munitions such as artillery, bombs and missiles. Dispersal increases the number of artillery rounds needed to neutralise or destroy a military unit in proportion to the dispersal of the said unit. If a division doubles the area it takes up, it will double the number of artillery rounds needed to do the same damage to it. As more targets are spread out or dispersed, more artillery and / or bombs are required to hit all the individual targets.
Bunker 6 is a Canadian psychological thriller film set in an alternate timeline in which a nuclear holocaust takes place during the Cuban Missile Crisis. Most of the film's action is set a decade later, inside a very large fallout shelter, in which a group of survivors are faced with the dilemma of continuing life in the shelter or facing the uncertainty of life in a world contaminated by radiation. Theatrically released, the film was also destined for television and "direct-to-video" release. Directed by Canadian writer and director Greg Jackson, in his first feature film, it stars Andrea Lee Norwood and Molly Dunsworth. The supporting cast includes Jim Fowler, Glen Matthews and Shelley Thompson. The film was shot in an actual fallout shelter in Nova Scotia.
