Fukushima’s nuclear signature found in California wine
This reminds me of the desirability of pre-WWII battleship steel in particle physics experiments.  Due to required detection sensitivity they need to construct experiments from materials that have as low background radiation as possible in order to not mask the actual information of interest. Ever since the first atomic bombs were detonated, sufficiently low-radioactivity steel became much more difficult to find.  A large portion of available low-background steel supply is from battleships that were built before the bombs [1]<p>[1] <a href="https://en.wikipedia.org/wiki/Low-background_steel" rel="nofollow">https://en.wikipedia.org/wiki/Low-background_steel</a>