1.   And apart from the blast itself, dirty bombs kill relatively few people, although the radiation can cause cancers years later.

2.   A dirty bomb probably would not kill more people than a conventional explosive, scientists said, unless the people in the contaminated areas were not evacuated.

3.   A dirty bomb would release radioactive shards and particles, some of which could linger in the air and be inhaled.

4.   A cruder but simpler way to use radioactive materials as a weapon would be to construct a radiological bomb, sometimes called a dirty bomb.

5.   A dirty bomb has exploded across town.

6.   A dirty bomb is one in which radioactive materials are dispersed through a conventional explosion to spread radioactivity.

7.   Almost by definition, the materials for dirty bombs are more radioactive than those in nuclear weapons.

8.   But the auditors noted that there were new concerns that they could be used to make the crude nuclear-laced explosives known as dirty bombs.

9.   Dirty bombs are not mass killers, they are weapons designed to inspire panic and cause disruption.

10.   Dirty bombs, scientists said at the hearing, would probably kill relatively few people through radiation itself.