From that article: > Since a dirty bomb is unlikely to cause many deaths by radiation exposure, many do not consider this to be a weapon of mass destruction.[2]

From that article: > Since a dirty bomb is unlikely to cause many deaths by radiation exposure, many do not consider this to be a weapon of mass destruction.[2] Its purpose would presumably be to create psychological, not physical, harm through ignorance, mass panic, and terror. For this reason dirty bombs are sometimes called "weapons of mass disruption". Additionally, containment and decontamination of thousands of victims, as well as decontamination of the affected area might require considerable time and expense, rendering areas partly unusable and causing economic damage Since that paragraph is talking about detonation over a populated area, 3k miles away even in the atmosphere I would think wouldn't cause much of an actual harm. But a solution might be to enrich the radioactive material in a space station in orbit.