A methane explosion ripped through the pit in Kemerovo region - but 101 safely escaped to the surface.
Two men died but miraculously more than 100 reach the surface safely.
Subsidence from old coal mine a possible cause of latest mystery hole.
Harry Potter joins Vladimir Lenin in coal-mining Kemerovo.
As much as two billion tonnes can be extracted from open-cast site over the next 167 years with hopes it can transform rural region.
Sasivat Wongsinsavat called Kuzbass cradle of Thai boxing at the opening of Muay Thai Championship.
The 5.3 tremor was felt over a wide area but was centred some 21km from Belovo in Kemerovo region.
Deep below the earth, we spend three days with the men and women working at the frontline to keep Russia, and the world, fuelled.