CU of gears of railway car unloader in motion. Interior HAS of full ore car bumping empty car ahead inside car unloader building. MSs of empty railroad cars rolling out of car unloader building. Various shots of ore conveyors moving away or towards camera, of maze of conveyors, of conveyor building. Shots of raised conveyors, of ore falling out onto stock-piles on ground. LS of ore conveyor moving towards conveyor building, of full ore cars on siding to the right. Interior shot of operator sitting at his desk, ore cars being moved about by car mover in background through window. Exterior shot of office, car slowly moving between office and camera. HASs of ore in moving cars, of switcher pulling string of cars. LAS of brakeman releasing brake, car moving away. LACU of car wheels whizzing by camera. Various shots of brakeman at work. TRAVELLING SHOTs of track, countryside, rail yards.