Dude gets splashed with liquid helium, or blasted with cryogas, or breathed on by a white dragon, and he freezes solid into an immobile, frosty, astonished-looking block of man. Then he teeters over and crash! Smashes into a million pieces. We've seen it in the movies, but has it ever actually happened to anyone? I've seen guys on TV deep-freeze hot dogs and roses and such and smash them with a hammer, but is it even plausible for this to happen to a human? - Brian J. Wright
You want to clear a room fast, try asking for a volunteer for human sacrifice. Plan B likewise proved impractical when Una balked at obtaining a corpse. Thank God for medical databases. Even so, progress was slow. Notable findings:
1. Despite determined effort, I couldn't find any instance of a person's body or portion thereof shattering.
2. On the fantasy front, I came across an episode of the TV series Bones "debunking" the idea that a human body would shatter if frozen in liquid nitrogen by freezing a turkey and dropping it. (It bounced.) Needless to say, this proves squat.
3. A Swedish company called Promessa claims to have developed an environmentally friendly way of disposing of bodies. The deceased is frozen in liquid nitrogen, then shattered with sound waves, and the pieces are composted. The firm's patent claims the process works, but while I can find lots of press about it, I see no indication of so much as a trial run. Attempting to contact the company has proven fruitless, and its Web site doesn't appear to have been updated in years.
4. German researchers investigating a potential case of insurance fraud (where an engineer suffered gangrene from liquid nitrogen spilled on the foot and leg) tested cadaver limbs to see how cold they got from exposure to liquid nitrogen. Pouring liquid nitrogen over the limbs created frost on the skin, but the internal temperature hardly budged. Dunking the limbs into liquid nitrogen for 40 seconds froze the skin solid, but the internal temperature only dropped a few degrees, and everything thawed in less than ten minutes. I'm confident you could get a body to freeze solid if you kept it in the tank long enough, but you can see this isn't going to be anywhere near as dramatic as it looks onscreen.
5. Experimental inquiry having proved disappointing, I next had Una see what she could scare up in the accident reports. Some 56,000 people work in cryogenics, with an injury rate of 4.4 percent. However, only a few severe freezing incidents emerged. One involved a man who stepped into a bucket of liquid nitrogen wearing only socks, possibly in an attempt at self-mutilation. His foot and lower leg were frozen solid and required amputation, but they didn't shatter. In another case a university student filling liquid nitrogen flasks collapsed and was found frozen to the floor but again, no shattering. A third individual had liquid propane splash onto his face and arms, freezing his gloves to his hands. Gangrene claimed two fingers, but they didn't break off.
6. The real danger from cryogenic liquids is asphyxiation or explosion, both of which can occur when the liquid evaporates in a confined space. If the room fills with a gas other than oxygen, you can suffocate. Evaporating chemicals can also expand to hundreds of times their liquid volume, meaning you can blow up. Last July a German chef working with a canister of liquid nitrogen lost both hands in an explosion. In 1997 a Worcester Polytechnic student decided to put liquid nitrogen in his mouth and blow smoke rings. Problem was, he accidentally swallowed the stuff instead, and the expanding gas blew a hole in his stomach and collapsed a lung. He lost part of part of his stomach and scarred his gastrointestinal tract, but otherwise recovered.
Having considered the thin evidence above, I'm guessing that fibrous tissue would prevent a body from simply shattering no matter what. However, this hypothesis remains untested, and with $41 in the Straight Dope Research and Entertainment Fund, well . . . a leg of lamb or turkey won't break the bank, but have you priced a tank of liquid nitrogen lately? Others have bigger budgets, and I look forward to seeing the results soon on high-def TV.
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