There are definitely more than those listed. Vela incident, for instance...
I know that this seems deep into tin-foil-hat territory, but do you recall Chelyabinsk? Lots of evidence to point to it being hit by an AMM (probably Gazelle) with a mini-nuke warhead.
What?! Not what I said - the Chelyabinsk meteor was a large ferric bolide, which isn't the kind of meteor which typically airbursts - that's reserved for less dense material. Many of the videos of it breaking up show an object approaching it at huge velocity from the rear the moment before it breaks apart, with many fragments accelerating relative to the previous speed of the bolide - again, not typical break-up behaviour - that would be the Gazelle, automatically intercepting a high speed object entering highly protected military airspace. The Gazelle operates by detonating a highly directional, shaped, small, nuclear warhead, in order to utterly destroy a re-entering MIRV - their primary purpose.
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?
