That's quite cold indeed.
Just wondering what do you wear for that kind of weather, and what kind of footwear you used (clothing on pictures doesn't seem over thick).
I get this questions a lot actually.
The short answer is layers, some of those particular pictures, I was making quick trips from our cabin, but lots of things can affect it. While the thermometer says on thing, with no wind, and perfect sunlight it feels warmer, however it is still very dangerous.
Thats one of the bad things about it being so dry out here, -30 here feels like a humid -20 back east, so it can be a very deceiving time of the year.
I will say, when its -50, wind chill or not, its cold...
For layers;
Torso:
1. base layer - a synthetic shit of some type
2. over base layer - a wiking insulated layer (under armor)
3. insulation - this will be however many layers I need (usually three to four)
4. outer layer - this will be a thick polar fleece with a wind/water shield when needed
Legs:
1. base layer - Under armor/misty mountain (a wiking but insulating layer)
2. Insulation - this has, and honestly always will (if it Isn't broke don't fix it) a misty mountain fleece, this will be however many layers needed
3. the outer layer, this isn't always a water proof layer, I would prefer to know when a layer is wet, and dry it. water proof can be an issue in this weather if not watch closely. It can be very deceiving in this area, over exertion and dehydration are very common.
Forgot footwear, this is one - two pairs of socks, and -60 boots, I will get a picture up of them.