It's interesting (and rather frustrating) that there is so little primary source literature available to the West regarding this accident. In addition to the technical causes of the failure there is a human factor element as well. Knowing how all of the holes in the swiss cheese line up to enable such an accident is very, very important if one wishes to avoid something similar occuring again.
Reading Dyatlov's book (what parts of it are available in English) is very interesting as it casts a very different picture than how he was portrayed in the HBO series. It's a shame that they did that to him. Dyatlov notes (correctly, IMO) that the junior control room engineers very likely would have been tried and convicted had they survived as well. He was found guilty of doing things that were only found to be wrong in hindsight.
Reading Dyatlov's book (what parts of it are available in English) is very interesting as it casts a very different picture than how he was portrayed in the HBO series. It's a shame that they did that to him. Dyatlov notes (correctly, IMO) that the junior control room engineers very likely would have been tried and convicted had they survived as well. He was found guilty of doing things that were only found to be wrong in hindsight.