Yes, it's easy to forget that all these people are employees of one sort or another and subject to the normal elfin safety rules etc. No doubt there's a Frigate sized support vessel nearby complete with an operating theatre and trick cyclists etc in case of mental health problems.....
I am in awe at the original story, also that of Shackleton, who had freezing temperatures as well.
Nb. When you read the Shackleton story, one of the outstanding characters most instrumental in the ultimate success and survival of the whole crew was the ship's carpenter, who I believe was sadly killed in WW1, as were several other survivors.