[Guide] THE HUNT IS ON! An In-depth Guide on Pokeradar and HAs Hunting [Ver. 2.0].

[Iron]

The egg you get in Bealbeach will never have the HA.

I'd assume the pokeradar would work on the nuclears. Maybe in a future update it will be possible to breed cured nuclear pokemon (assuming they produce a cured egg) and you could get it that way.