U.S. issues ‘dirty bomb’ cleanup guide

January 8, 2006

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Once again raising the specter of the unthinkable, the Homeland Security Department yesterday issued cleanup standards for a terrorist attack with an “improvised nuclear device.”

Often called “dirty bombs,” improvised nuclear devices use conventional explosives to disperse radioactive material without a nuclear explosion. Such weapons, which could use Cesium 137 or other radioactive material, would be useful as terror devices because they can render an area dangerous, uninhabitable and spread panic.