I recall people talk about that in Sweden too. There did however seems to be a bit confusion around since copper, silver and iron mining tend to release a lot o

I recall people talk about that in Sweden too. There did however seems to be a bit confusion around since copper, silver and iron mining tend to release a lot of radioactive radon dust in a fairly large area. The recommendation to be careful with wild mushrooms or wild meat never made a distinction between the two sources.