Various MCSs of yardmen checking locomotives, oiling. Interior shots of stations, dispatchers' offices, with brakemen, railway clerks, station masters, at work. Shots of men removing truck from box car, welding it. CUs of dispatcher speaking on phone. Shot of man pulling large levers in railway yard control room. Various interior shots of dispatch office and of men at work. Rear shot of station master at desk and of train speeding by in background as seen through window. Various shots of train gang laying track, repairing it in mountains, in outskirts of city. TRAVELLING SHOT of mountain river, low mountains, and conifers, as seen from moving train.