Deputy Prosecutor General of Russia: the surviving rescuer stayed in the mine for a day, injecting himself with drugs 
»In Kuzbass thanks to the medications that he constantly injected himself. This explanation was given to journalists by the Deputy Prosecutor General of Russia Dmitry Demeshin. His commentary to Lente.ru was provided by the press service of the government of the Kemerovo region.
The Deputy Prosecutor General clarified that Zakovryashin climbed to the surface for more than a day. “He used, as we understand, several devices,” Demeshin said.