Obligatory XKCD chart for understanding the radiation amounts in the article<p><a href="https:&#x2F;&#x2F;xkcd.com&#x2F;radiation&#x2F;" rel="nofollow">https:&#x2F;&#x2F;xkcd.com&#x2F;radiation&#x2F;</a><p>100 mrem == 1mSv<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Sievert#Rem_equivalence" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Sievert#Rem_equivalence</a><p>Thinking about the article... for those who understand the risks of increased background radiation, I bet for these businesses rent is cheap!