Show was intense, but kind of wish they would have showed the events within the site leading up to that, rather then start it away from that and then go there ( or maybe that's for another episode?).
Watching this reminded me of Hisashi Ouchi and what he went through.
For those that don't know he worked the Japanese nuclear fuel conversion company and was exposed to 17 Sv (the highest known dose of radiation at the time) by any human in an accident back in 99.
He didn't die even though they thought anything over 8 Sv was fatal. Instead he was kept alive by doctors, all while his skin was horribly burned, his white blood cells were basically destroyed, his internal organs were damaged, and he was in immense unbearable pain. He begged the doctors to let him die, they didn't. They kept him alive, they wanted to study what radiation did to the human body and basically worked to keep him alive as long as possible to see what it did. He underwent skin transplants, blood transfusions, etc all to keep him alive, probably the absolute most painful thing any human has ever had to endure.
He was kept alive for 83 days until he finally passed, far longer then he should have had to suffer.
You can read more about it if you are curious, but be warned there are pictures, and it is a horrible sight.
https://www.unbelievable-facts.com/2016/12/hisashi-ouchi.html