From here: https://en.m.wikipedia.org/wiki/Bathysphere#cite_ref-Gould_2-9
I read about this ages ago, but I've never forgotten the story of the hatch being launched back from the bathysphere with the force of a cannon. Absolute miracle no one was killed when this happened, honestly.
shiznit this is utterly horrifying and like something out of a really, really bad nightmare. It surprises me not that that so many people are very, very traumatic over this whole tragedy.