I would think that Dyatlov would mean it was a warm wind as opposed to cold , the use of words
From Group diary below.
" Wind is western, warm, piercing, with speed like the draft from airplanes at take-off."
It seems to be just a bit of descriptive writing.
The rockets/missiles were designed first and there were also several test launch sites over the Soviet Union with obviously the need for a testing range. ( Where the missile would land/crash). There was also a secret city and many installations that were kept secret, this we know.
So, as I've re-read some information about the missiles , silos etc , I think I have a better understanding. Missiles were designed at the various test sites and evolved. Launch sites or pads needed to be made on hard ground. These soft launch sites were exposed to a nuclear blast as they were above ground. These sites had buildings and vehicles further a away from the soft launch pad there were buildings for men , vehicles etc .( Some state 800 personnel). Although the main body of the missile could be transported on the back of a truck , it wasn't a simple case of driving this truck to a field and pointing it upwards and pressing the fire button. All sorts of fuel was needed, control rooms , assembly and a small army of people . So these soft launch pads were followed by the hard launch pads called silos. It is these hard and soft launch sites that get built for the purpose of striking back with the finished missiles and not for testing the missile.
Each of these hard silo bunkers was like a small underground base . As said above , yes , there were secret facilities factories and production around the rest of the USSR. This would be the same in all countries, the question is , was there anything secret at the Dyatlov pass region ?. To date, nothing has come to light yet we have loads of information about Soviet test sites, nuclear accidents , spies, flight paths and dates for every missile flight but nothing about Dyatlov pass.
My point is , I don't think there's anything in the Dyatlov region that would be a bigger secret that wouldn't have been released by now. Im sure they would have admitted if a test flight of rocket XYZ fell out of the sky at Dyatlov pass in 1959 . There's no gain in keeping it classified today if they know what happened, any technology at the time would be no secret today.
My hunch is there was just too much talk of lights in the sky in the case files when both sides of the cold war were trying to keep things secret, that's all of the secret bases and missile tests that we now know existed. . It's why the silos were named after rivers , to keep the west guessing, or so the big wide web says.
Perhaps Nord 2( northern 2) was reconnaissance for something military but that was obviously stopped long before 1959 and long before silos .
So much was going on at the exact same time of Dyatlov pass regarding missile development that even the mention of radiation, lights in the sky etc, I would guess someone in the Kremlin just said close the case and tell everyone involved to stop talking about it.
A new's article about lights in the sky , 30 statements regarding lights in the sky. Statements of radiation and strange photos of lights were in the case files . It was the cold war , both sides are trying to de-esculate each others nuclear capability with negotiation and diplomacy whilst at the same time , secretly developing their own military power.
This is the only reason I can think of to make the case classified at the time.....Or the exact opposite......