Any recommended readings on this?
Some of the employees sued though my father chose not to be part of the lawsuit because he had moved on. The company lost the lawsuit but I can't find any record of it on Google. I don't think that was a coincidence ;<).
Morton-Thiokol (I remember the name from the Challenger disaster, I didn't realise it was that Morton until, well, about 20 seconds ago) formed in 1982.
So that'd be 1970s / early 1980s?
[0] https://www.nytimes.com/1972/11/16/archives/simmons-takes-mo...
[1] https://www.nytimes.com/1981/04/04/obituaries/john-w-simmons...