[VanTheBrand]

Radon is radioactive. The alpha particles it emits can break down polymers and degrade plastics.

[bluGill]

Interseting - I have high radon (mitigeted in the house via a fan), if I burry fibre what will I need to do to get something that will work? I have an outbuilding that I want to give internet.

[lima]

No, radiation from radon at naturally occurring levels won't cause any damage to plastics.

[CamperBob2]

If it were radioactive enough to do that, you'd have a much bigger problem than some networking flakiness.

[VanTheBrand]

I don’t disagree but your comment made it sound impossible which it isn’t.