Some concern exists relating to the development and use of "smoky bombs." These devices do not rely on high explosives to disburse the radioactive...

Some concern exists relating to the development and use of "smoky bombs." These devices do not rely on high explosives to disburse the radioactive materials but are actually subtler. What is the material most likely to be used in this type of weapons, and how might this type of weapon be deployed against an unsuspecting target?