And so young Jimmy Carter led a containment team of 24 men into the Chalk River Laboratories nuclear research facility near Ottawa, Canada, after a reactor accident released 4,500 tons of radioactive water into the building's basement (nuclear safety manuals in the 1950s were apparently just single issues of The Uncanny X-Men).
Carter divided his team (himself included) into rotating 90-second shifts spent conducting cleanup and repairs directly next to the overheating reactor while wearing protective gear with the same anti-radioactivity rating as a Huckleberry Hound Halloween costume. It was essentially like that sequence in K-19: The Widowmaker wherein Peter Sarsgaard and his team take turns putting on flimsy plastic coveralls to get boiled alive by waves of white-hot atomic fire pouring out of a malfunctioning submarine core. And yes, we said the shifts were 90 seconds long -- that was the longest a human body could tolerate the conditions (and that turned out to be grossly unsafe, based on what we know now).
The plant bosses knew it then too, but they didn't tell Jimmy.
To track their progress, Carter's team built a life-size replica of the damaged reactor on a nearby tennis court where each team member could practice the next step of repairs, because it wouldn't do for someone to go all the way down into the radioactive death basement and then forget what the hell it was they came there to hammer for 90 seconds. Carter and his team might spend an entire trip tightening a single bolt before scurrying back upstairs to rinse off all the science poison.