When I heard we would be travelling to Hiroshima, I was both elated and a bit terrified. After all, being one of the few cities in human history to be struck by a nuclear weapon (actually… Nagasaki was the only other), Hiroshima must still have a few free radicals floating around-right? Was this place actually safe?
A man at the Hiroshima Museum told me that the radiation had dissipated pretty fast. Upon conducting a bit of research, it seems the guy at the museum was right. The reason, of course, is that the Little Boy detonated in the air above the city and very few “heavy” particles of rock and soil were directly blasted and uprooted. Still, what about the irradiation of the metal in the buildings and on the surface of the landscape? Was that A-Dome fenced off to preserve both it and us? What about the other structures that were kept partially or totally intact? Everyone’s living there, so it must be safe, right? Most of the rubble was scraped from the ground and most of the radioactive particles have been blown and washed away, disseminated into the atmosphere and oceans. The irradiation of the A-Dome itself used to be dangerous, but apparently the radioactivity (mainly caused by the addition of neutrons rather than gamma rays and whatnot). I was a bit fearful of the trolleys we were riding because it wasn’t clear if they had been replaced since being moved in only days after the blast in order to keep the victims and supplies moving where they needed to be. Unfortunately, there are some things the internet just won’t tell you. If only I had had a Geiger counter with me, I might have been able to draw some basic conclusions. As it turns out, though, Hiroshima isn’t really the thing we should be worried about.
Indeed, everyone seems to think that Japan was the first country to experience radioactive fallout. This, however, is technically incorrect.
The Trinity bomb test in New Mexico on July 16, 1945 is generally considered the beginning of the atomic age, and was in fact the proof-of-concept test for the plutonium implosion bomb, the Fat Man, later dropped on Nagasaki. What few people realize is that the fallout from the test was tremendous. We’ve all heard how scientists and soldiers were unwittingly exposed to the phantasmal danger of the radiation both during and after the blast, as well as how poorly understood this danger was at the time. Directly after the bomb exploded, radioactive clouds drifted to the northeast, blanketing especially Santa Rosa and Santa Fe with abnormal amounts of radiation. There were also many far-travelling clouds which eventually touched down in New York due to becoming concentrated in heavy rain storms that were occurring there at the time. A telling sign of this radioactive contact was that aberrations in film development rose sharply for a few days. No one can say what the human cost over time has been due to such issues as contaminated ground water in New York and exposure to the dust clouds in New Mexico, but the government seems to believe radiation levels are quite safe in these areas. Just don’t be the one to drink that one wrong glass of water-ha, just kidding. Or am I?
Ever since Trinity, nuclear tests both in the U.S. and Russia (followed by a slew of others) have created large amounts of fallout, carried on the wind and in the water. Eastern Russia is especially hard-hit. Check out this link illustrating U.S. fallout concentrations. I wouldn’t want to be Montana:
http://en.wikipedia.org/wiki/Image:US_fallout_exposure.png
Artificial sources of radiation are actually quite abundant. Many older camera lenses and printing inks contained radioactive metals. Many people fear nuclear power facilities, yet even with radioactive waste included, coal plants apparently still produce more environmental radioactivity due to the release of radioactive elements when their coal is burned. Conventional CRT monitors and televisions also jack up the yearly rad count of nearby organisms, as does porcelain, many types of food and those vicious medical scans (PET, CAT, x-ray etc.), among a host of other vectors, including humans themselves.
So was a visit to Hiroshima a bit exceeding when it came to our recommended yearly dosage of radiation? Many sources seem to indicate that background radiation is much higher than that caused by artificial effects. Apparently, the beaches in parts of India and Brazil are filled with radioactive elements and yearly exposure in these places is unusually high. Likewise, ambient radiation throughout the world varies greatly; the Rocky Mountains and surrounding areas have a relatively high amount of ambient radiation in general, as do the Andes Mountains. Here’s a link showing geographic radiation levels in the U.S.:
http://energy.cr.usgs.gov/radon/usagamma.gif
More on geographic and everyday sources of radiation:
http://www.blackcatsystems.com/GM/safe_radiation.html
Hiroshima’s radiation is about twice that of other sea-level areas; actually, going to Yellowstone National Park is more radiation intensive than going to Hiroshima because of the elevation and geological conditions there (the elevation lacking a great deal of protection against the sun’s radiation).
I may as well just go live in Hiroshima. It would probably be less radioactive than eating U.S. food grown in radioactive soil and living in a moderate fallout area like Michigan, not to mention sucking in the occasional stray radon cloud, which doesn’t happen much in coastal areas. How sad. The terrible thing about higher radiation levels is the fact that human fetuses are so sensitive to them; IQ is irreparably damaged or lowered in many cases, and mysterious illnesses, glandular problems and yes, cancer, are more likely to appear over a person’s lifetime in the modern era. Reproductive tissues and DNA are often altered and damaged, leaving potential offspring a lotto chance at normal development. Naturally, it’s difficult to measure the impact of radiation in different areas due to the existence of so many other potentially correlated factors. But radiation must have some effect. Radiation is great at getting concentrated in a mother’s milk, and so even after birth, many babies are still being bushwhacked by rogue particles. Our parents had it the worst-they were being born when the fallout was totally fresh. All of this means that we probably got more of an atomic experience as infants (or, at least, a more damaging one) and on our family vacations out west than on our trip to the site of an atomic bombing. Did I mention that riding planes is also quite radioactive?
Posted in Uncategorized