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A dirty bomb is a bomb made of conventional explosives, like TNT, with the addition of radioactive isotopes, designed to spread over a wide area. Dirty bombs are less devastating than nuclear devices, but easier to create. On Monday, June 10, 2002, US Attorney General John Ashcroft announced that the security services were successful in foiling an attempt by al-Qaeda terrorists to detonate a bomb in Washington, D.C.
Last updated: June 14, 2004.
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