11. The two gaseous diffusion plants blend uranium into the concentrations needed by power plants. 12. The former gaseous diffusion plant covers of the site. 13. By the end of the summer in 1940, Peirels preferred gaseous diffusion to thermal diffusion. 14. The gaseous diffusion process remained more encouraging, although it too had technical obstacles to overcome. 15. AREVA replaced its Georges Besse gaseous diffusion plant with the Georges Besse II centrifuge plant. 16. Enrichment is achieved either by gaseous diffusion or centrifuge. 17. Over the next three years, Libby worked on the gaseous diffusion process for uranium enrichment. 18. The SAM Laboratory had 700 people working on gaseous diffusion and Kellex had about 900. 19. Gaseous diffusion had been used to separate isotopes before.20. Richardson said to the applause of several hundred workers at the Portsmouth Gaseous Diffusion Plant.
