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TIL that the Chernobyl disaster would have been a lot worse if three engineers hadn’t volunteered to swim through radioactive water to open valves and drain the liquid to prevent a steam explosion(r/todayilearned)
Apparently, Alexei continues to work in nuke industries (More edit: There’s even a photo of him, the second one) and Bezpalov is still alive, Baranov died of heart failure in 2005. The whole story that they died “2 weeks later” is…. a gross exaggeration.
Try the book Chernobyl 01:23:40, the author has done some good research about the lives of the 3 heroes after the disaster.
Edit: Anyway, see what your OP said.