A message informing about the basting agent explosion that happened at reference level of -580 while priming the hole bottom during the drivage was received on control panel of the Udachny Diamond Mine at 05:26 a.m. on July 11.
Two sections of mine rescue brigade were working on-site according to emergency containment plan that was put into effect. At the moment of the explosion there were 174 employees in the mine. All the employees except for the security post workers were removed from the mine.
The explosion killed an employee of Ayhalo-Udachninsk special-purpose mine construction department “UKS”.
Udachny Diamond Mine started working as per normal at 08:09 local time. Gas conditions are normal. A commission to investigate what happened is working.