Eugene from Bashkiria, civil engineer. Topic since July 2014. Worked (I still work on two) at all well-known specialized forums in Russia, except Paranormal Russia on this topic. Search direction: four groups with leaders by name Dyatlov: Lev Mikhailovich from Kazan, Igor and Mstislav are brothers and Perm Dyatlov went on a campaign with his wife. Besides them, in three groups was Zolotarev. At the moment, this whole story, in the understanding of the Gradient, is an alloy of several directions. Military, civilian, some rockets and of course the front bomber. It’s all on the “platform” of the International Geophysical Year of 1957-58 and its continuation of the MGGS (International Year of Geophysical Cooperation) of 1959. Plus a “spy line” in Ivdel. In short, somewhere, and to which end there will come a private investigation of the Gradient called “Where is the samurai muse?” - wait and see.