That and the uncertainty of being able to open the doors when a quick exit is needed, say a fire or something. There’s a big difference in price tag in total loss vs. loss of life.
That and the uncertainty of being able to open the doors when a quick exit is needed, say a fire or something. There’s a big difference in price tag in total loss vs. loss of life.
More lead than at first; polonium-210 decays to lead. With a half life of 138 days, and 1947 being over 28,000 days ago, most of the original material is gone.