Jefferson Proving Ground, Madison, Indiana Jefferson Proving Ground, Madison, Indiana Indiana ›› Jefferson County (IN) ›› Madison, Indiana Jefferson Proving Ground, Madison, Indiana Established in 1941, the Jefferson Proving Ground facility was operational up until 1995. This video is about the historic structures hidden deep in the woods. Tags: Ammunition Army Bridge Indiana Jefferson County Jennings County Lake Madison Ripley County River School
Established in 1941, the Jefferson Proving Ground facility was operational up until 1995. This video is about the historic structures hidden deep in the woods.
