WARNING : GRAPHIC CONTENT . Survivor is treated in Dontesk hospital after explosion on Wednesday . Comment: Blast happened before dawn 3,200ft underground at Zasyadko mine . It has history of deadly accidents including one in 2007 that killed 101 .
WARNING : GRAPHIC CONTENT . Survivor is treated in Dontesk hospital after explosion on Wednesday . Andrei Serebrennikov was exposed to dangerous levels of methane . Blast happened before dawn 3,200ft underground at Zasyadko mine . It has history of deadly accidents including one in 2007 that killed 101 .