War-Precious Pile That great black pile in the foreground is Manganese nodules, the pure stuff that's used in making steel, now sorely needed by our steel mills for war production. This is called a stock pile, and there's 750,000 tons of Manganese here awaiting shipment east. It is but a part of Montana's great contributions of vital metals needed for the war industries. In the distant background that's an old slab dump which is now being refined to extract the last ounces of copper, which might have been neglected years ago when refining processes were not as good as they are today.

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

[Information from item housing] Manganese--Manganese