2014 Zenica mine disasterThe 2014 Zenica mine disaster was a mining accident that occurred on 4 September 2014 at the coal mine "Raspotočje" in Zenica, Bosnia and Herzegovina.BackgroundAfter a 3.5 Richter-scale earthquake hit Zenica on 4 September 2014, causing a rock burst in the coal mine "Raspotočje", 34 miners remained trapped inside the mine. All miners were trapped more than 500 meters below the surface, but were provided with fresh air.CasualtiesOut of the 34 miners trapped inside the mine, 5 died, while the remaining 29 sustained minor injuries.