An explosion in a Russian coal mine today trapped 15 miners and injured two. Domestic news agencies report, rescue efforts are under way. A spokeswoman for the emergency situations ministry told Interfax news agency that 67 people were working underground at the time of the blast. She said 52 have been evacuated. Two of them were hospitalised for burn injuries. Initial reports said, the accident appeared to be a methane gas explosion. The disaster was the second deadliest mining accident in Russia's post-Soviet history after a tragedy that claimed 110 lives at a different mine in the same region in 2007.