Kyle Hill did a documentary on this on YouTube and it was incredibly fascinating 😮 Managed to find it, it's worth a watch! youtu.be/uJ8cYheR5xo

SL-1: America's First Nuclear Disaster

YouTube video by Kyle Hill

I also recommend the official debriefing youtu.be/AWi_w2H1saE?...

Nuclear Power Reactor - The SL-1 Accident Video: Briefing Film Report - 1961 - CharlieDeanArchives

YouTube video by Charlie Dean Archives