CU of molten iron being funneled into a carrier vessel. MS of the vessel, worker passes by. Cu of molten iron pouring through a stream. CU of a steel worker taking a sample of the molten iron, analyzing its quality. Pan vertical to Cu of the worker. CU of three workers discussing the quality of the ore. WS of a train passing by filled with iron. WS of a furnace, with a operator placing all varieties of iron into the furnace to be recycled. CU of operator. CU of the machine unloading used steel to be melted down. Cu of a storage mixer pouring out molten iron into a ladle. CU of operator doing the task. WS of machinery moving overhead to move the ladle. CU of two workers. CU of furnace as iron is being poured. VO of narrator describing the process and how essential iron is to a vast network of human industries.