[8] Although the plutonium production plants at Hanford would eventually use graphite as a "moderator" to slow and control the fission process, Manhattan Project officials also pursued heavy water as an alternative option.

A feasibility report conducted by the DuPont Company in November 1942 also rated heavy water as an acceptable cooling system, second best only to helium.

This information was brought to the attention of Harold Urey, a Manhattan Project scientist who had won the 1934 Nobel Prize in Chemistry for his discovery of deuterium, an isotope of hydrogen.

Urey imagined a nuclear chain-reactor pile built as a “homogeneous” system with heavy water as both the moderator and cooler.

It could function with a simple pump device, a much simpler design than the complex helium-cooled graphite pile.

For security reasons, the plants had to be administered directly by Manhattan Project officials while the Ordnance Department was, according to Colonel James Marshall, “not to be involved in the design or knowledge of use of the product.” The three plants would collectively produce three tons of heavy water per month.

Construction at the Wabash River Ordnance Works started on January 23, 1943, and was fully completed on December 13, 1943.

[6] Newport is located at the confluence of the Little Vermilion and Wabash rivers along Indiana State Road 63, about halfway between the county's north and south borders.

The racial makeup of the town was 97.58% White, 0.35% Native American, 0.87% Asian, and 1.21% from two or more races.

Automobiles, trucks and motorcycles from the Steam, Brass, Vintage, Antique, and Classic Car eras make timed runs from a standing start, up a steep hill to a finish line 1,800 feet away.