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A '''radiological dispersal device''' ('''RDD"""), or '''dirty bomb''', is a bomb designed to disperse radioactive material.  

A '''radiological dispersal device''' ('''RDD'''), or '''dirty bomb''', is a bomb designed to disperse radioactive material.  

It is generally comprised of non-nuclear explosives with radioactive waste material inside. Such RDDs appeal to terrorists or non-nuclear states because they require limited technical knowledge to build and deploy compared to an explosive nuclear device. The size of the affected area and the level of destruction caused by an RDD would depend on the sophistication and size of the conventional delivery system and other factors. The area affected could be placed off-limits to the public indefinitely during cleanup efforts.  

It is generally comprised of non-nuclear explosives with radioactive waste material inside. Such RDDs appeal to terrorists or non-nuclear states because they require limited technical knowledge to build and deploy compared to an explosive nuclear device. The size of the affected area and the level of destruction caused by an RDD would depend on the sophistication and size of the conventional delivery system and other factors. The area affected could be placed off-limits to the public indefinitely during cleanup efforts.  

If the bomb was placed in a subway, and people spent 2 hours on it, anyone within 2.5 feet of the device will likely die, and sickness would occur within 12 feet. Cleanup would be very hard. You would have to recover all of the 500 Ci after the explosion. It would likely never be clean again. The death toll would be in the hundreds, the injury toll in the thousands, and the people exposed in the tens of thousands. While no incidents have occurred where it was intentional, the Goiania incident was an accident, and the source's activity was around 1375 Ci. Lots of deaths and injuries resulted from it.

If the bomb was placed in a subway, and people spent 2 hours on it, anyone within 2.5 feet of the device will likely die, and sickness would occur within 12 feet. Cleanup would be very hard. You would have to recover all of the 500 Ci after the explosion. It would likely never be clean again. The death toll would be in the hundreds, the injury toll in the thousands, and the people exposed in the tens of thousands. While no incidents have occurred where it was intentional, the Goiania incident was an accident, and the source's activity was around 1375 Ci. Lots of deaths and injuries resulted from it.

==References==

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