The facility was located adjacent to the K-25 site, where the massive gaseous diffusion plant was under construction.

Its main eventual contribution to the war effort was to further concentrate material from the gaseous diffusion plants to even higher levels of purity.

Though he was working on the calculations for the gaseous diffusion plant, he had never visited the site.

The requirements for pumping and cooling make diffusion plants enormous consumers of electric power.

At the time of their construction in the early 1940s, the gaseous diffusion plants were some of the largest buildings ever constructed.

Gaseous uranium hexafluoride was used to separate uranium-235, an important nuclear explosive, from the heavier uranium-238 in diffusion plants.

Centrifuge cascades also have much less material held in the machine at any time, unlike gaseous diffusion plants.

The S-50 liquid thermal diffusion plant was demolished soon after the war.

June 2: Construction begins of K-25, the gaseous diffusion plant.

Now it, too, wants to build a centrifuge plant, near a former gaseous diffusion plant in Ohio.