hat's off to those guys!
That kind of cold is inhuman.
I got to experience working in -36C temps in Canada while fixing my girlfriend's car. It was only under an hour (40min.) but my lungs hurted, extremities numb, eyes dried, and facial skin cracked. I couldn't stop shaking.
I think I over did it on these old bones, as I had to sleep it off all of the next day.