CU of a furnace door opening montage with a locomotive passing by. MS of a large ship at sea, CU detail of the boat. Aerial view of cars on a freeway. MS of a telephone wires and telecommunications. MS of a farmer driving a tractor, driving through a field. CU panning up of an oil rig. CU of a stove top where a house wife is cooking, moving towards the sink. CU of a carpenter hammering a nail. CU of a woman at a piano, detail of the steel strings inside the piano. CU of canned food being opened, placed in a dish. CU of the insides of a watch that a man is repairing. High panning shot of skyscrapers. WS moving of a steel bridge. VO of narrator describing the process and how essential iron is to a vast network of human industries.