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Bunker Down

by Stephen I. Schwartz, Bulletin of the Atomic Scientists

Readers of a certain age will recall civil defense measures against atomic attack with nostalgia, amusement, fear, or some combination of all three. Growing up in Los Angeles in the mid-to-late 1960s and early 1970s, I missed out on the zenith of public concern over fallout shelters, the period from 1961--62, which, as author Kenneth Rose states, is the only time in U.S. history when "the question of nuclear war and survival has been embraced by an entire nation as a subject of urgent debate."

Yet, throughout my elementary and junior high school years, regular and unannounced "drop drills" took place. At the sound of a special series of bells and the instruction of our teachers, we were to dive under our desks, face away from the windows and crouch with our arms over our heads, which were pressed against our legs. My classmates and I were told--and believed--that these drills were held to prepare us in the event of an earthquake, a not infrequent occurrence in southern California. That explanation made sense, and the exercise was reassuring, even fun--it provided a few minutes of excitement in an otherwise uneventful school day.

As I realized years later, though, these drop drills probably evolved from the "duck and cover" exercises my predecessors were subjected to, beginning in the early 1950s. Like our drills, they were often unannounced, leaving more than a few students unsure if a nuclear attack was under way or if it was merely a test. And although hiding under a desk might provide protection from an earthquake, it would be of little help in avoiding the effects of a nearby nuclear bomb blast, a conclusion many students and parents reached as more information about the effects of nuclear weapons became available.

One Nation Underground is a richly detailed and beautifully written account of a pivotal period in the Cold War civil defense debate, a time when Americans collectively confronted the implications of the Bomb. On July 26, 1961, President John F. Kennedy, just back from a meeting with Soviet Premier Nikita Khrushchev in Vienna (where Khrushchev threatened to declare Berlin, a neutral city, off limits to the West), gave a nationally televised address concerning the Berlin crisis. Asserting his intention to keep the city free and accessible, Kennedy declared, "We do not want to fight, but we have fought before."

In his speech, Kennedy proposed spending an additional $3.2 billion for the military, as well as $207.6 million for a civil defense plan to "identify and mark space in existing structures--public and private--that could be used for fallout shelters in case of attack." Should an attack come, he said, "the lives of those families which are not hit in a nuclear blast and fire can still be saved if they can be warned to take shelter and if that shelter is available. . . . We owe that kind of insurance to our families and to our country. . . . The time to start is now." Kennedy concluded with the sobering comment that "in the thermonuclear age, any misjudgment on either side about the intentions of the other could rain more devastation in several hours than has been wrought in all the wars of human history."

Kennedy's speech, along with the erection of the Berlin Wall on August 13, and a Soviet nuclear test on September 1 (ending a three-year bilateral testing moratorium), dramatically increased fears of nuclear war and drove Americans to think about fallout shelters as never before. Kennedy's speech set off a national debate--and, for a brief period, a frenzy of shelter building. Americans were fearful, but they also supported the president's stand. A Gallup poll released four days after the speech found that "82 percent favored the maintenance of American, British, and French forces in Berlin 'even at the risk of war.'"

Given all that, Rose sensibly asks why more Americans did not build fallout shelters. In June 1961, governors from 40 states "reported that more than 60,000 family fallout shelters had been built or were under construction." "By 1965," Rose writes, "as many as 200,000 may have been in place," but he considers that number "highly speculative."

Rose concludes that "Americans talked a great deal about fallout shelters, but relatively few Americans actually built fallout shelters." The significant cost of constructing a viable shelter was a major impediment, as was the realization that it might not fully protect against the destructive shock wave or the tremendous heat of a nuclear blast. The impracticality of constructing shelters in urban areas also played a role, as did strong congressional opposition and, by the late 1960s, dwindling federal funding (thanks to the escalating costs of the war in Vietnam). Military leaders were also less than enthusiastic. As Gen. Curtis LeMay said, "I don't think I would put that much money into holes in the ground to crawl into. . . . I would rather spend more of it on offensive weapons systems to deter the war."

A kind of patriotic fatalism also dampened enthusiasm. Polls taken before and after Kennedy's speech showed a strong and consistent preference "for annihilation over communism" (a position that appalled many outside the United States and led Bertrand Russell to complain that when Americans said they "'stand for freedom' it meant 'you must be quite willing to perish in order to be free in hell'"). But Rose rejects the idea that Americans were passive. "Americans actively took part in the debate over shelters, and their rejection of fallout shelters was a conscious decision based on the social, moral, and economic implications of building those shelters." Fundamentally altering the American way of life in order to save it was deemed unacceptable.

Rose believes that above all, moral issues caused Americans to reject fallout shelters. In the wake of Kennedy's speech, there were furious debates over whether it would be right to turn away neighbors or strangers seeking safety in one's small family shelter. And many people evidently concluded that the smoldering, radiating ruins awaiting the survivors' return to the surface would not be worth surviving for. "Even Dwight D. Eisenhower proclaimed (in a 1962 Redbook article) that if he found himself in a shelter without his family, he 'would just walk out. I would not want to face that kind of a world and the loss of my family.'"

One Nation Underground is much more than an exploration of these issues, however. It is also an engaging history of civil defense, drawing on a wide-ranging set of sources (including a number of Bulletin articles). In its pages, one learns, for example, that dog tags were issued to schoolchildren in San Francisco, Seattle, New York, and other cities to aid in identifying the lost, dead, or wounded (tattooing was considered but rejected, according to a Milwaukee school administrator, "because of its associations and impermanence in the case of severe burns").

Ever mindful of the need to protect not just people, but everything they would need to survive, government preparations for the post-nuclear war period included an Agriculture Department publication for farmers called Bunker-Type Fallout Shelter for Beef Cattle.

Rose also provides an excellent overview of the treatment of nuclear weapons in literature and film (and how books and movies influenced attitudes toward nuclear war); examines how businesses prepared for nuclear holocaust; and explores the Abo Public Elementary School in Artesia, New Mexico, the only public school built entirely underground and equipped to function as a fallout shelter.

Despite--or perhaps because of--the subject matter, Rose subtly weaves humorous anecdotes into his account. He relates the story of 12 families from the New York area who in the fall of 1961 decided to leave en masse for Chico, California, to escape the threat of nuclear war. "Chico, a town of 15,000 in 1961, was chosen because its topography and wind patterns supposedly created a favorable environment for protection from the ravages of nuclear war. . . . The choice of Chico befuddled most observers, however, as a Titan missile base was being installed seven miles north of town. Alvin Bauman [the group's leader] seemed unfazed ('We knew we couldn't escape every possible danger')."

Shortly after the Kennedy speech, ads for a variety of fallout shelters began to appear. Wood, Inc., an organization touting Colorado timber products, displayed a wooden shelter design at a shopping center in Denver. "When he was interviewed by the Denver Post, company president Clark Gittings seemed a bit defensive about the viability of a wooden shelter against nuclear attack (perhaps because of the widespread public perception that wood burns)."

Addressing the subject of the comparative effectiveness of Soviet civil defense measures (a matter of considerable debate in the 1960s and again in the 1980s), Rose quotes from a 1961 Bulletin article debunking a Rand Corporation analyst who claimed in congressional testimony that the Moscow subway could shelter 2 million people (each person would have an average of 3.75 square feet of floor space). "Apparently the sturdy Muscovites are capable of standing (sitting would require six square feet) in the same position, motionless, for two weeks or so, while engaging in all of those basic processes essential to human survival!"

My favorite story concerns the tale of Willard Libby, the former Atomic Energy Commission chairman who opposed public funding for shelters and insisted they could be constructed cheaply. To promote his cause, Libby wrote a 15-part newspaper series titled "You Can Survive Atomic Attack," featuring a less-than-$30 "poor man's shelter" he had built in West Los Angeles out of railroad ties, old tires, and bags of dirt. "Libby's argument for the viability of the poor man's shelter was undercut somewhat when this structure was subsequently destroyed in a brushfire." When physicist and former colleague Leo Szilard heard about the fire, which occurred during the Cuban missile crisis, he said it proved not only "that God exists, but that He has a sense of humor."

Survival City is another well written (if slightly less focused) book about overlooked aspects of the Cold War--part travelogue, part architectural history, and part rumination on the impact of nuclear weapons on the American psyche. Author Tom Vanderbilt takes to the interstate highways (constructed in part to facilitate the swift evacuation of cities in the event of attack) to discover the influence of the Cold War on the American landscape. "The Cold War was--and is--everywhere in America," he writes, "if one knows where to look for it. Underground, behind closed doors, classified, off the map, already crumbling beyond recognition, or right in plain view, it has left an imprint as widespread yet discreet as the tracing of radioactive particles that blew out of the Nevada Test Site in the 1950s."

Vanderbilt's travels take him to the destruction of a Minuteman II silo in North Dakota (and to the last remaining intact Minuteman II silo in South Dakota, soon to be a National Historic Monument); the remnants of the Safeguard site (the only operational U.S. missile defense system), also in North Dakota; Wendover Air Force Base in Utah (where Col. Paul Tibbets secretly trained B-29 bomber crews to drop the first atomic bombs); New Mexico's Kirtland Air Force Base (home to the "Trestle," an enormous all-wood structure used to test the electromagnetic pulse effects on aircraft and other military equipment, and the location of the first atomic test in 1945); a Titan II missile silo outside Tucson, Arizona, converted to a museum; a defunct Nike missile site near Los Angeles; and the Nevada Test Site, the location of the various buildings exposed to nuclear tests--the "survival city" of the title.

While touring the test site, Vanderbilt has a surreal exchange with an Energy Department official, demonstrating that in some places at least, the Cold War lives on. Viewing the Sedan Crater, a hole 1,280 feet wide and 322 feet deep created by a 104-kiloton test in 1962 that was part of the Plowshare program, Vanderbilt notices that the southern end of the military's secret "Area 51," believed by many UFOlogists to be the highly classified location of alien bodies and spacecraft, is visible in the distance beyond a ridge of mountains. When he asks his guide if he can photograph the crater, she responds, "You can photograph the crater, but you can't photograph the sky behind the crater."

"The underground," writes Vanderbilt, "is the paranoid aspect of the Cold War, the dark space beneath the symbolic order reigning above." Accordingly, "one could not understand the Cold War period, with its superficial consensus, progress, and stability, without considering its subterranean chambers of reinforced concrete, locked doors, secret communication networks, and men with guns. In the underground world, complexes were built to replicate the governing structures above; the home fallout shelter promised security beneath the backyard; it was the only place eventually deemed acceptable for nuclear weapons testing; and tunnels were built to siphon information from hostile embassies. Finally, in the Cold War's aftermath, it was where we chose to bury the untouchably toxic residue that had accumulated."

Vanderbilt visits the luxurious Greenbrier Resort in White Sulphur Springs, West Virginia, for 30 years the site of a massive, 112,000-square-foot bunker (Project Greek Island) meant to house the entire U.S. Congress and selected staff members in the event of nuclear war. Kept secret until its cover was blown in a Washington Post Magazine article in 1992, the facility included decontamination showers, dormitory and meeting space, a complete medical clinic, a television studio, a crematorium, and enough food for about 1,000 people for two months. A woman in Vanderbilt's tour group (the site opened to the public in 1996), observing the elaborate measures taken to protect senior government officials in contrast to the relatively paltry efforts to safeguard the general public, remarked, "I want to know where we were supposed to go. That's what I want to know."

Vanderbilt ponders the mindset of the people who "conceived, engineered, and maintained [the bunker] (not to mention the feelings of those who kept fresh rations on hand, or updated the names of congressmen on the dormitory beds when new members were voted into office)." The site, he decides, "is a permutation of the 'banality of evil,' the rational response to an irrational policy." The complex's 19.5-inch-thick, 25-ton steel blast doors speak "less to the strength of the facility than to the rather sobering question of what would have happened to everyone beyond the door."

The author also tours a rudimentary fallout shelter intended for President Kennedy and his family off the coast of Palm Beach, Florida; the headquarters of the North American Aerospace Defense Command (NORAD) inside Cheyenne Mountain, Colorado; an Atlas F silo converted into a unique luxury home in upstate New York; and the Waste Isolation Pilot Plant near Carlsbad, New Mexico, the final resting place for bomb-manufacturing buildings, equipment, and clothing contaminated with plutonium.

Vanderbilt makes a good case for calling more attention to the architecture of the Cold War, even when it is barely visible on the surface. Take the program to construct intercontinental ballistic missile silos, which an air force historian, Jacob Neufeld, described in a 1990 book as "the largest and most extensive building program of its kind at that time" (1960--67). One site alone (Whiteman Air Force Base in Missouri) consumed 168,000 yards of concrete, 25,355 tons of reinforcing steel, 15,120 tons of structural steel, and hundreds of miles of wiring and cables. Nearly 1,300 silos and launch control centers were constructed across the country (largely in the West) at a cost of around $20 billion (in today's dollars), not including the cost of the missiles and warheads themselves.

Unfortunately, the secret and often obscure nature of underground complexes, together with their seeming banality makes them less than attractive candidates for historical preservation and interpretation. Vanderbilt shrewdly notes that such sites, at once in plain view and yet invisible, are "an apt metaphor for a war that was real yet imaginary, abstract yet concrete, everywhere and nowhere."

No one likes to think about the consequences of nuclear war, or even the explosion of one nuclear weapon. It is simply too horrific--and abstract--to dwell on. But it is one thing to block out an unpleasant reality and quite another to be ignorant of it. Survival City, by taking us on a tour of important places we've probably never been, is both a call to preserve Cold War history and a valuable reminder of the continuing impact of nuclear weapons on the American cultural and physical landscape.

Stephen I. Schwartz is publisher of the Bulletin and the editor and co-author of Atomic Audit: The Costs and Consequences of U.S. Nuclear Weapons Since 1940 (1998).

 

Bomb Shelter Planning
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Build Your Bomb Shelter
First Steps, Materials Required, Costs
Stocking Your Bomb Shelter
Nuclear Emergency Kit (NEK), Emergency Supply Kit, Food, Water, Medical, Etc.
Bomb Shelter FAQ's
Complete List of Essential Nuclear Blast and Underground Bomb Shelter FAQs
Understanding Radiation
Overview of Radioactive Fallout and How to Protect Yourself From It
Nuclear Bomb Facts
Kiloton, Blast Wave, Damage
 

 

 

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Radioactive Fallout Will be the Killer
Like the more than 160 million Americans who live within the danger zones, your greatest concern following a nuclear attack comes from radioactive fallout.  That's the main reason you will need a well-constructed, underground bomb shelter.

Bomb Shelter Writing Supplies
Are writing supplies available, including pens or pencils and printed forms or paper, for keeping records of radiation exposure?

Watching for Fallout to Arrive Near the Bomb Shelter
When a nuclear weapon explodes anywhere within several hundred miles, there will be many signs to indicate it. By that time, people should be on the way to, or already at, their bomb shelter.

Use of the Penalty Table as a Guide for Bomb Shelter Operations
The Penalty Table was developed to provide a simple guide when decisions must be made that will involve some risk.

Group Dosimetry: Keeping Track of Radiation Exposure
The radiation hazard will be worst throughout the first 24 hours after each fallout cloud arrives. It is important to start keeping track of everyone’s radiation exposure right away, as soon as fallout begins to arrive.

Time-Averaging Method
Used to compare the radiation levels between two or more locations in a bomb shelter when the radiation levels are climbing rapidly and when you have only one survey meter.

Space in the Bomb Shelter
Is there going to be enough room for all of the people at this bomb shelter in the locations of best protection?

Restroom and Water Locations in the Bomb Shelter
After fallout has arrived, he or she should check the radiation levels at these locations. Some of them may have to be blocked off until the radiation decays to a safer level.

Radiation Safety Improvement in Bomb Shelters
As you go through your bomb shelter looking for the places that appear to provide the best shielding from gamma radiation, you should also look for ways to improve the shielding.

Organization of the Bomb Shelter Population
Organization of the bomb shelter population into bomb shelter units, each with its own Unit Leader, is necessary not only for good management but also for keeping a radiation exposure record for each person in the bomb shelter.

Materials for Shielding the Bomb Shelter
You may have improved the radiation safety of the bomb shelter to the best of your judgment and capability, as discussed earlier. But after fallout arrives, you may find with the use of your survey meter that gamma radiation is shining through at some unexpected location.

Light Sources in the Bomb Shelter
Electricity may fail in many locations due to a wide-scale nuclear attack. Most of the bomb shelters with the highest FPF’s will also have the least daylight reaching them. If the power goes out, these bomb shelters may be pitch black.

Informing the People in the Bomb Shelter about Radiation Exposure
Even if people are frightened, it is better not to hold back information. The policy of “what they don’t know won’t hurt them” has never worked with the American public.

Getting and Checking the Bomb Shelter Instruments
If you are selected to be an RM after you arrive at the bomb shelter, you may have to find out where the radiation instruments are, and you may have to make a special trip to get them. Instructions on how to use the instruments may be given at the place where they are issued.

Gamma Shielding by using People in the Bomb Shelter
The shielding effect of human bodies can be used to provide extra protection. This protection would be of particular benefit to those people with the greatest sensitivity to radiation, namely, children and pregnant women.

Forecasting Radiation Exposure
When the survey meter readings level off and then continue to decrease, the arrival of fallout from that particular cloud at your location has almost ended. If no more fallout clouds arrive, the radiation levels will continue to decrease rapidly.

Finding the Places with the Lowest Radiation Levels in the Bomb Shelter
Use the survey meter to find the places that have the lowest radiation levels. The people in the bomb shelter should be gathered at the locations that are estimated to have the lowest radiation levels.

Finding and Covering up Leaks in Bomb Shelter Gamma Shielding
After the safest locations have been found in the bomb shelter and the people have moved there (if they weren’t there already), use the survey meter to make detailed measurements of the radiation levels in and around the area where the people are located.

Dosimeter Locations: Where to Place Dosimeters
In some bomb shelters where the FPF is high and about the same everywhere, as in deep underground bomb shelters, caves, and mines, only a few dosimeters need to be mounted or hung where people will be located, to get an idea of what total exposures they are getting, if any.

Decontamination of People Caught in Radioactive Fallout
Fallout arriving within a few hours after a nuclear explosion is highly radioactive. If it collects on the skin in large enough quantities it can cause beta burns

Checking Radiation Levels Outside the Bomb Shelter Area
Sometime no later than 24 - 30 hours after fallout has begun to come down, you (the RM) should take the survey meter and check the radiation levels in rooms next to the bomb shelter area and on the way to the outside.

Checking Out the Bomb Shelter
Some bomb shelters may have many rooms, some of them on different levels, and others may have just one large room. The problems of providing the best radiation safety will be a little different in each bomb shelter.

Best Bomb Shelter Protection
Which locations within the bomb shelter appear to offer the best protection against fallout?  Sketch a bomb shelter floor plan and mark these locations.

Bomb Shelter Openings and Ventilation
Are there openings to be baffled or covered to reduce the amount of radiation coming through them? Will these changes allow enough air to flow through to keep people from getting too hot when they are crowded?

Bomb Shelter Location
The location you choose for your bomb shelter should be one which gives you the greatest protection possible.  Just placing an underground bomb shelter in your back yard is not enough.

Bomb Shelter Design
What should your underground bomb shelter look like?  What materials should it consist of?  How should it be designed?  These are all important considerations when planning the construction of an underground bomb shelter.

Blast and Fallout Concerns
The blast wind produced by a nuclear bomb will reach 2,000 mph within the first half mile from ground zero, drop to about 1,000 mph at 2 miles, and will still be at hurricane force (200 mph) several miles out.

Get an Underground Bomb Shelter, Hop in, Now What?
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Before Fallout Arrives
It may not be possible to do all these tasks before fallout arrives at the bomb shelter or fallout shelter, and in that case, those tasks that can be done inside the bomb shelter can be done later while fallout is arriving.

Types of Nuclear Explosions
The immediate phenomena associated with a nuclear explosion, as well as the effects of shock and blast and of thermal and nuclear radiations, vary with the location of the point of burst in relation to the surface of the earth. For descriptive purposes five types of burst are distinguished, although many variations and intermediate situations can arise in practice.

Sources of Radiation
Blast and thermal effects occur to some extent in all types of explosions, whether conventional or nuclear. The release of ionizing radiation, however, is a phenomenon unique to nuclear explosions and is an additional casualty producing mechanism superimposed on blast and thermal effects.

Time Scale of a Fission Explosion
An interesting insight into the rate at which the energy is released in a fission explosion can be obtained by treating the fission chain as a series of “generations.” Suppose that a certain number of neutrons are present initially and that these are captured by fissionable nuclei; then, in the fission process other neutrons are released.

Thermonuclear Fusion Reactions
From experiments made in laboratories with charged-particle accelerators, it was concluded that the fusion of isotopes of hydrogen was possible.

Thermal Radiation
The observed phenomena associated with a nuclear explosion and the effects on people and materials are largely determined by the thermal radiation and its interaction with the surroundings. It is desirable, therefore, to consider the nature of these radiations somewhat further.

Fission Products
Many different initial fission product nuclei, i.e., fission fragments, are formed when uranium or plutonium nuclei capture neutrons and suffer fission. There are 40 or so different ways in which the nuclei can split up when fission occurs; hence about 80 different fragments are produced.

Fission Energy
The significant point about the fission of a uranium (or plutonium) nucleus by means of a neutron, in addition to the release of a large quantity of energy, is that the process is accompanied by the instantaneous emission of two or more neutrons.

Critical Mass for a Fission Chain
Although two to three neutrons are produced in the fission reaction for every nucleus that undergoes fission, not all of these neutrons are available for causing further fissions. Some of the fission neutrons are lost by escape, whereas others are lost in various nonfission reactions.

Attainment of Critical Mass in a Nuclear Explosion
In order to produce an explosion, the material must then be made “supercritical,” i.e., larger than the critical mass, in a time so short as to preclude a sub-explosive change in the configuration, such as by melting.

Residual Radiation
The residual radiation hazard from a nuclear explosion is in the form of radioactive fallout and neutron-induced activity.

Radiation and Fallout
Radioactive fallout will fall in a manner similar to that following a volcanic eruption.  It will be flaky in appearance and its size may reduce to dust particles or smaller.  Expect it to be thicker near the detonation site and thinner as it travels down wind.

Initial Radiation
About 5% of the energy released in a nuclear air burst is transmitted in the form of initial neutron and gamma radiation. The neutrons result almost exclusively from the energy producing fission and fusion reactions, while the initial gamma radiation includes that arising from these reactions as well as that resulting from the decay of short-lived fission products.

General Principles of Nuclear Explosions
An explosion, in general, results from the very rapid release of a large amount of energy within a limited space. This is true for a conventional “high explosive,” such as TNT, as well as for a nuclear (or atomic) explosion, although the energy is produced in quite different ways.

Worldwide and Local Fallout
The radiobiological hazard of worldwide fallout is essentially a long-term one due to the potential accumulation of long-lived radioisotopes, such as strontium-90 and cesium-137, in the body as a result of ingestion of foods which had incorporated these radioactive materials.

Energy Yield of Nuclear Explosions
The “yield” of a nuclear weapon is a measure of the amount of explosive energy it can produce. It is the usual practice to state the yield in terms of the quantity of TNT that would generate the same amount of energy when it explodes.

Distribution of Energy in Nuclear Explosions
The basic reason for this difference is that, weight for weight, the energy produced by a nuclear explosive is millions of times as great as that produced by a chemical explosive.

Atomic Structure and Isotopes
A less familiar element, which has attained prominence in recent years because of its use as a source of nuclear energy, is uranium, normally a solid metal.

Thermal Radiation
The observed phenomena associated with a nuclear explosion and the effects on people and materials are largely determined by the thermal radiation and its interaction with the surroundings. It is desirable, therefore, to consider the nature of these radiations somewhat further. Thermal radiations belong in the broad category of what are known as “electromagnetic radiations.”

Understanding Radiation
What is radiation, you ask? 
Radiation in physics is the process of emitting energy in the form of waves or particles. Various types of radiation may be distinguished, depending on the properties of the emitted energy/matter, the type of the emission source, properties and purposes of the emission, etc.

Bomb Shelter Entranceway Problems
One problem that could develop is that the bomb shelter entrance could be blocked by people who have stopped just inside the entrance.

Minimizing Exposure to Radiation
It's people like you and me (hopefully) that will survive the initial blast.  Our greatest concern is radioactive fallout.  Fallout will kill as many, if not much more than the blast itself.  And how long you have before fallout arrives depends on three things.

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