CU of steel workers taking a break, inside a manufacturing plant. CU of steel being pounded into a round column, workers rotating constantly. Moving MS of two workers operating machinery. CU of steel being pressed into a train wheel mold. CU of two workers operating the steel compressor. MS of the wheel moving down a conveyer belt, where a worker fixes it. Moving MS of an operator, controlling a reheating furnace. Moving CU of the steel passing through a number of passes / processing steps. CU of finihed product of steel coiled wire. VO of narrator describing the process and how essential iron is to a vast network of human industries.