[arethuza]

I would have thought that the detonation of a nuclear weapon near to the meteor (particularly an ABM which typically use "enhanced radiation" warheads) would have made the remnants fairly "hot" due to neutron activation.

I haven't seen any reports that the remnants of the meteor are radioactive?

[madaxe_again]

Yeah, they were:

1) Refers to fireball hot enough to blind and cause second degree burns, and references two nature papers which say the energy discharged is inconsistent with airburst models http://www.theguardian.com/science/2013/nov/06/chelyabinsk-m...

2) Residual radiation of fragments wouldn't be expected, as the Gazelle system uses neutron bombs, not uniquely in ABM systems: http://en.wikipedia.org/wiki/Neutron_bomb

Fine - it's not definitely the case that this happened, but there's enough information floating about to make it far more than plausible.

[arethuza]

"Residual radiation of fragments wouldn't be expected, as the Gazelle system uses neutron bombs"

"Neutron bomb" is another name for an "enhanced radiation weapon" - basically an H-bomb designed to give off large amounts of neutron radiation. So you would expect anything close to the explosion of such a device (and therefore exposed to a very high neutron flux) to have pretty clear indications that would be easy to test for.