Might want to think about a very early use for old film, which was detecting radiation. Now, it's back in vogue since better than some modern high-tech equipment. Check out the pioneering work of Rutherford. Hope this helps. I just bought some old Ansco for my own research purposes; not cheap.
I have PAPER FILM from 1955-63 L@@K!!
in The Wet Darkroom: Film, Paper & Chemistry
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