Miners enter an elevator to go down at the Zasyadko coal mine in Donetsk March 4, 2015. Dozens of miners were trapped underground and feared dead after a blast on Wednesday at the coal mine in the eastern Ukrainian rebel stronghold of Donetsk. Mine officials said the explosion was most likely caused by gas and not linked to fighting at the nearby frontline in the war between Moscow-backed rebels and Ukraine government forces. The regional administration said the bodies of nine miners have been found so far but the fate of another 23 remains unknown. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CONFLICT CIVIL UNREST ENERGY DISASTER TPX IMAGES OF THE DAY)