We understand from the case files that without zinc coffins, the deceased were not going to be flown out. I investigated a bit further and came to understand that zinc as a material is effective in delaying decay of a cadaver and it allows a typically wooden coffin to be hermetically sealed.
The record shows that the deceased were frozen solid and sewed into tarpaulins for aerial transport. They were later to be thawed and forensically examined.
It occurs to me that sealing a body in a zinc coffin only to open it up again might ruin the integrity of the coffin. Secondly, the zinc coffin was not specifically required for any suspected radiation contamination. Third. a zinc coffin is used for people of some importance.
From this I conclude that there could be no surreptitious pre-flight re-dressing hard frozen corpses. Secondly, they were frozen and sewed so there was no real concern of a communicable disease escaping. Third, the DP9 were considered worth the expense and effort to be transported in something better than a utilitarian wooden casket, even though obtaining them was an inconvenience and a government expense.
I do not support the idea that using a zinc casket was a ploy to hide evidence of assassin's work. Far to many rescuers saw what they say, carried what they carried, and talked as they wished.
The DP9 (not 10 or 11) died by natural causes and moved in a military fashion which owing to the zinc caskets was not particularly expedient..
The fact that Geiger counters were used during the search must raise the question of radioactivity. And thus the use of zinc coffins.
As far as I recollect, the instrument that was used on the slope was said to be a dosimeter or so it was stated by one of the searchers in a much later/post interview. This measures the exposure to potential radiation.
The fact that no one was pulled away from the search or the search cancelled suggests there was no radiation to be concerned about over that 3 months.
This might have just been a standard measure for the environment given the previous nuclear accidents , it may just have been an opportunity to check whilst they were there on the ground. Saying that , I don't think there's any mention of a Geiger counter until after the bodies are returned and the clothes separated from the ravine 4 .
Again , many years later some author states that a lawyer said that the order was given by ivanov ( I think) to test the clothes because they were "glowing" in some room. I don't think clothes "glow" with radiation , that's stuff of cartoons not reality.
I wrote a piece about Zinc coffins a while back, from what I can remember, zinc coffins were standard at the time for a number of quite boring reasons and the moving of bodies in flight. There was reasonable debate given for why the pilots didn't want to take the bodies , none involved radiation as a reason and no body knew of the radiation on the clothes because that was recorded after they had been transported and not before. The bodies were also going to be potentially checked at the location I think but this was stopped for some other practical reason , the weather if I remember.
I could be wrong on a couple of things but even the reporting of the radiation readings halving after the clothes had been washed makes little sense as they were lying in running water for a number of weeks.
It is clear Ivanov was well down the road of lights in the sky, burns on trees , rockets etc from his own speculation and belief as to what happened. We can argue he was on to something or perhaps muddied the waters from his own imagination, rightly or wrongly.
However, we can explain the lights that were reported as remote missile tests , the burns on trees as natural wind burn that he did not understand. As for the glowing clothes , there was a chemical that could be applied to the clothing so it can show up blood under certain light conditions, I wonder if this was used and he again misunderstood what was being done, it's either that or the glowing clothes story is just another fabrication to get people interested and to sell books of mystery.