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So here's a fun side note:
This are two gamma spectra superimposed, both from Uranium Glass samples.
They don't differ in peak energies, because both contain U238 and U235. What they do differ in is peak intensity!
The cluster from ~150 to 200 keV is noticeably smaller in one sample than in the other, which means....
One is depleted, the other one isn't!
Before 1945 depleted uranium wasn't really a thing, after that pretty much all civilian used uranium was depleted.