The majority of those who escaped unharmed were workers in the front of the building who left through the unlocked main entrance, but most workers were trapped by a curtain of smoke. Others tried to escape through the locked doors by kicking them down, but without success; most of the survivors from the rear of the building got out through a loading bay. The bay was initially blocked by a tractor-trailer, but three workers went into the rear of the truck and pounded on the walls until they were heard by rescuers who moved the vehicle. Others escaped when several workers managed to break open a few of the doors, though for many this came too late.