Any idea why low-background steel[1] is that valuable given the fact that it is only 0.005 mSv/yr above natural levels at 1.26? [2] [1] https://en.wikipedia.or

Any idea why low-background steel[1] is that valuable given the fact that it is only 0.005 mSv/yr above natural levels at 1.26? [2] [1] https://en.wikipedia.org/wiki/Low-background_steel https://en.wikipedia.org/wiki/Low-background_steel [2] https://en.wikipedia.org/wiki/Background_radiation https://en.wikipedia.org/wiki/Background_radiation