How to Farm Hardened Mass in Fallout 76

Hardened Mass is primarily obtained by defeating organic creatures inside Blast Zones (also called Nuke Zones) in Fallout 76. You can find Blast Zones by opening your map and looking for big, red circles on it. If you didn't know, Blast/Nuke Zones in Fallout 76are created by players who decide to launch nuclear missiles in Appalachia; this means that they can appear at any time, and you can even make them appear yourself, provided you've completed all the prerequisites. Just be aware that this is an endgame process, and you likely won't be able to launch nukes yourself if you haven't made progress in one of the main questlines.