Thieves Who Stole Cobalt-60 Will Soon Be Dead

Hugh Pickens DOT Com writes "The Washington Post reports that the carjackers who set off international alarm bells by absconding with a truckload of highly radioactive cobalt-60, used in hospital radiotherapy machines, most likely had no idea what they were stealing and will die soon from exposure. The robbery occurred as the cobalt-60 was being driven from a public hospital in the border town of Tijuana to a storage facility in central Mexico. While waiting for daybreak at a gas station in the state of Hidalgo the drivers were jumped by two gunmen who beat them and stole the truck. "I believe, definitely, that the thieves did not know what they had; they were interested in the crane, in the vehicle," says Mardonio Jimenez, a physicist with Mexico's nuclear safety commission. The prospect that material that could be used in a radioactive dirty bomb had gone missing sparked an urgent two-day hunt that concluded when the material, cobalt-60, used in hospital radiotherapy machines, was found along with the stolen Volkswagen truck. The cobalt-60 was found, removed from its casing, in a rural area near the town of Hueypoxtla about 25 miles from where the truck was stolen. Jimenez suspects that curiosity got the better of the thieves and they opened the box. So far the carjackers have not been arrested, but authorities expect they will not live long. "The people who handled it will have severe problems with radiation. They will, without a doubt, die.""

Comments

Re: isn't it possible to detect

[e3m4n]

Geiger-Mueller detectors work on the photoelectric effect. Point source radiation is an inverse square law. You wouldn't detect this stuff even a few miles away. Reactors hardly release any isotopes. It's the thermals that show up on satellites

Re:hmmm...

[the_other_chewey]

Here you go: The Goiânia accident.

It wasn't an X-ray machine though, but a device for radiotherapy.
Fortunately, X-ray machines are harmless when powered down.

Re:Tough luck..

[Hatta]

They could have been intending to use it to make dirty bomb what could have exposed hundreds, if not thousands to such an ugly death.

The dirty bomb, as a weapon of mass destruction, is a myth. Disperse the radioactive material far enough to affect a large number of people, and you disperse the radiation as well. The concentration of radioactive material decreases as the square of the radius of the area of dispersal.

Re:Tough luck..

[Anonymous Coward]

anyone willing to so wantonly disregard the rights of others for personal gain does not belong in our society.

And yet, this seems to be the very premise of America these days.

Re:tragic lack of prevention

[Nidi62]

The US does the same thing. When nuclear material gets shipped across the US it is in unmarked, locked trucks (although I am sure the shipment itself if liberaly marked). Of course, these are government shipments and have heavily armed escorts, in unmarked vehicles as well. You don't want to advertise the fact you are carrying radioactive cargo, both for security and NIMBY reasons. At least, this is what I have been told by my father's cousin, who did security for both nuclear shipments and nuclear sites for the DOE for a number of years (and was even a rangemaster for them at one time-yes, even the DOE has their own firing ranges)

In this particular case, and especially given the amount of crime in Mexico, it does not surprise me that the truck would be unmarked. And it doesn't really matter if the cargo is marked: carjackers aren't going to rob you at gunpoint and beat you up then take the time to look at the cargo and see if it is worth stealing. They are just going to drive off. I am surprised that the hospital didn't at least hire a security service to escort the shipment; I would assume even(maybe even especially) in Mexico contractable security services are common. Maybe they just aren't trustworthy or capabale enough?

Re:hmmm...

[jafac]

Goiana was Cesium-137.

There have been several incidents with Cobalt-60 sources, including one in 2010 in Dehli, India, and another in 2000, in Thailand. And in some cases, the radioactive material has ended up being recycled into new products; for example - incidents which actually happened: water-dishes for pets, and belt-buckles sold from discount websites. In these cases, the radioactivity was detected by random spot-checks. There are probably products out there that have incorporated recycled radioactive substances, which made it through spot-checks and are sitting in people's homes, making them sick - and there is no way for us to know.

With regard to the cobalt 60 source: Wikipedia says it was 111 Tbq.
"Example: a 60Co source with an activity of 2.8 GBq, which is equivalent to 60 g of pure 60Co, generates a dose of 1 mSv at one meter distance within one hour."

A 1 Sv dose in 1 hour, is lethal.

Extrapolating 111 TBq to 2.8 GBq; (111,000/2.8 = 39,642 ...); so multiply 1 mSv by that, and you get 39.6 Sv per hour.

If they took it out of it's casing, they'd receive a lethal dose of radiation in less than 2 minutes. (depending on how close they stayed, and how long they stayed near it). Staying at least 400 cm away, would mitigate much of the beta particles, but not the gamma rays. Gamma rays are attenuated by the inverse square law, like any radiant energy. So distance is also your friend, but better still, an inch or so of lead.

They would not start feeling symptoms, until an hour or two later. Dizzyness, headache, nausea, vomiting. Later - worse symptoms appear. It will probably take a few days for them to die, and they may seek medical treatment, which may save them, depending on how long they were in close proximity to the unshielded source.