Just thought I would pass by and reflect on what this particular Topic is all about.
''So the theory is that the members of the tent suffered strong exposure to NO2. This forced them to cut openings in the tent for ventilation before giving up and cutting open the tent to escape. Then they had no choice but to abandon the tent and head to the forest to seek shelter.''
Well obviously its about GAS. The Theory that a Gas of some kind made the Dyatlov Group abandon their Tent. And then the other events are supposed to have been related to the Gas event at the Tent. Its certainly a Theory worth discussion but I think its got a bit carried away. An awful lot of irrelevance as crept in. The Theory begins to suffer immediately they leave the Tent, rather than gather outside to attempt to get back for their clothing and equipment, they just walk off a mile to their certain DEATH. That kind of does not make sense.
Well you are creating a narrative before dismissing it. I'm saying the colour of the hands and faces for SOME of the DP group (and Chivruay) has to be NO2. There are only three possible sources for it wrt the DPI, electro magnetic, rocket fuel and atomic explosion. I like the first one and it seems if he were still with us so would Ivanov. So i'm using this thread to promote the "electro magnetic source theory" by linking to reports of orange/black ufos which i believe are evidence that these objects are more prevalent in the atmosphere than many people realise, it's part of the case i'm making.
Now how this translates to a narrative on abandoning the tent etc i'm not sure. It maybe that NO2 wasn't the primary event but was also present (secondary effect). There seems to be an asymmetry of exposure, Yuri D probably the first to die with foam on his cheek and at the funeral he was significantly darker than Zinaida who was also affected. Igor's face colour was noted in the morgue. For Lyudmila it seems that she had her chin covered throughout and it stayed white. Some of the others like Semyon and Nicolai don't seem to be affected presumably because they were a few hundred metres away photographing the light show on the western ridge (i assert Plane1/Plane2 to be an electro magnetic object similar to the quebec one posted on this thread and possibly the source of the NO2 with the plume traveling downstream over the tent.
For the NO2 plume to be the primary event that drove them out of the tent it would have to be a dense concentration. The narrative could be that Yuri D was outside answering a call of nature when the dense plume hit, he rushed back in through the entrance choking, exposing everyone else to it who then exited through the sides and got away asap. By the time they reach the cedar it is clear that Yuri D is in a bad way and returning is unwise.
Now by this time it is very probable from Ivanov's interview that they have seen and photographed the fire orbs. If these were ball lightning rollers then it is plausible based on historical accounts of similar that the ravine four were crushed in their den under the snow by one rolling down the ravine. It's possible that they had already had a scare earlier (scorched tree tops, Yuri K's leg) and this was the reason for abandoning the fire and seeking shelter in the ravine. They thought it was safer.... The last three realised that their only chance was to get back on their skis and leave the area but the nitric acid in their lungs was taking effect and they couldn't handle the effort of the ascent back to the tent, Zina appears to have been found at the base of the steepest section. The cold did the rest.