My dad was a man with a lot of interests, one of which was the history of photography. He painstakingly reproduced just about every old photographic process that he could find documentation about (well pre-internet, so this mostly involved flea markets and libraries). The most dangerous ones were the Daguerreotypes, an early monochrome process that used mercury vapor for the development of the photographic plates. That nobody died or got really ill from that is a small miracle, he had absolutely no idea of how dangerous this all was.
https://en.wikipedia.org/wiki/Autochrome_Lumi%C3%A8re
My dad was a man with a lot of interests, one of which was the history of photography. He painstakingly reproduced just about every old photographic process that he could find documentation about (well pre-internet, so this mostly involved flea markets and libraries). The most dangerous ones were the Daguerreotypes, an early monochrome process that used mercury vapor for the development of the photographic plates. That nobody died or got really ill from that is a small miracle, he had absolutely no idea of how dangerous this all was.
https://en.wikipedia.org/wiki/Daguerreotype
https://en.wikipedia.org/wiki/Autochrome_Lumi%C3%A8re