I wonder what was going on in this lab that needed scintillation crystals, electron guns, cadmium sulfide and these other interesting parts you have shared here. Is anything marked with military designations or coding? Doesn't seem military so I'm guessing it was mostly private research. Very interesting stuff.
Nothing military. My original thought was they were trying to do some sort of nuclear detection with some of the stuff, other stuff suggests there was a primitive integrated circuit development going on. Maybe the two were related, the circuit was designed to run the detector. This was right in the thick of the cold war, so anything that would be early warning for nuclear events would catch the government's attention and possibly federal dollars.
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