A Vital Wartime Metal - Manganese oxide nodules fill their wartime purpose in the production of open hearth steel. In one of the plants of the United States Steel corp., molten blast furnace iron is added to the open hearth furnace two or three hours after the scrap iron charge. It is transported in the transfer ladle shown here, carried by overhead crane from the storage mixer to the open hearth furnace. The molten iron is poured into the furnace with the aid of a portable trough inserted in the furnace door.

Wide World Photos, Inc. · [ca. March 1942]

[Information from item housing] Manganese--Manganese