CU of converter, rising glowing detail of molten iron inside. CU of two steel workers operating the machine. CU of mixer transposing molten iron into the converter. CU of the operator. CU of giant furnaces, spewing and bubbling. CU of operator. Drive by WS of the furnaces spewing forth at night. CU of operator. CU of furnaces spewing outside, at night. WS of giant steel molds being wheeled in to the stripping yard. CU of machinery removing the molds, revealing glowing columns of steel. WS of these columns rolling by, worker in front guiding them. VO of narrator describing the process and how essential iron is to a vast network of human industries.