Indiana Army Ammunition Plant

The Indiana Army Ammunition Plant was an Army manufacturing plant built in 1941 between Charlestown and Jeffersonville, Indiana. It consisted of three areas within two separate but attached manufacturing plants: Indiana Ordnance Works Plant 1 (IOW#1): (3,564.71 acres) made smokeless powder Indiana Ordnance Works Plant 2 (IOW#2): (2,757.49 acres) made rocket propellant Hoosier Ordnance Plant (HOP): (4,326.8 acres) manufactured (and loaded) propellant charge bags == Creation == In 1940 it was announced that the world's largest smokeless powder plant would be built near Charlestown, as the land was close to the Ohio River, giving it the water necessary for making smokeless powder, and the fact that the land was cheap because parts of it were unsuitable for farming, and because few individuals lived on it.

Source: Wikipedia — Indiana Army Ammunition Plant (CC BY-SA 4.0)