Assertion: dirty bomb's material | /r/HasProperty | snm
Facets:
Source sentences:
text: However, despite thefts and trafficking of small amounts of fissile material, all low-concern and less than Category III Special nuclear material (SNM), there is no credible evidence that any terrorist group has succeeded in obtaining Category I SNM, the necessary multi-kilogram critical mass amounts of weapons grade plutonium required to make a nuclear weapon.