MS of steel worker checking the functions of a machine he is operating, WS of the west of the interior. ECU of a machine, operating. WS of an assembling line where woman are sorting through processed sheets of cold steel. CU of one woman inspecting the finished product. MS of the assembly line and a group of women passing through. MS of hot steel running through the first pass of the process. CU of hot steel being cut into sections of rail. ECU of rail being cut. MS of a steel being processed. MS of a steel worker operating the machine. Worker’s POV of the steel being processed. VO of narrator describing the process and how essential iron is to a vast network of human industries.