New Delhi, June 9: It is early mornng and the Sun is yet to come out. But a man, in railway uniform and carrying a hammer, is waiting by the side of a rail track for a 52-wagon freight Train to pass. He has to cross the track and is joined by his work mate. Once across, both started hammering the track in unison. They have a job to maintain the tracks in perfect condition so that trains can move safely.