When World War II broke out, Bauxite was again called into martial action, with production rapidly increasing with the need for refined aluminum to produce airplanes and other materiel.

Legitimate military-industrial targets include factories producing materiel (arms, transport, and communications equipment) for the military; metallurgical, engineering, and chemicals industries whose nature or purpose is essentially military; and the storage and transport installations serving such industries.

Many worked in traditionally male labor jobs in the manufacturing plants that produced munitions and materiel, replacing men who were away at war.

Their family-operated forge turned out all sorts of farm equipment, and eventually began producing materiel for the Union Army.

By this logic, if factories and workers producing materiel are part of the war effort, they become legitimate targets for attack, rather than protected noncombatants.

Atsion was the site of an iron forge making bog iron in American Revolutionary times, and produced materiel for American forces.

After profiting from Scotch Tape in the 1930s, 3M produced military materiel during WWII, and by 1946 had developed the first practical vinyl electrical tape.

During the war years, car production at the firm declined by more than half, since the company was producing materiel for the war effort.

The Australian Government produced posters depicting the sinking, which called for Australians to "Avenge the Nurses" by working to produce materiel, purchasing war bonds, or enlisting in the armed forces.

The Pentagon said exempting military installations and Government contractors from the environmental statutes could become necessary if the war continues for months or years and factories producing military materiel are required to increase their production.