Kellex Gaseous Diffusion Programme
Kellex is organised to design the gaseous-diffusion plant, with Percival Keith directing work on plant engineering and diffusion barriers.
Historical biography archive · Updated 2026-11-03
Percival C. Keith Biography and Timeline
Follow Percival C. Keith through 6 dated historical records for United States of America.
Percival C. Keith, historical timeline
A chronological timeline drawn from matching World History Database records.
6Distinct records
1 of 1Page
1942–1945Years on this page
1942
1943
Decatur Barrier Plant Construction
Construction begins on a plant in Decatur, Illinois, intended to manufacture gaseous-diffusion barrier material for K-25.
K-25 Surveying Begins
Surveying begins for the massive K-25 gaseous-diffusion uranium-enrichment plant at Oak Ridge.
K-25 First Concrete
The first concrete is poured for the K-25 gaseous-diffusion plant building at Oak Ridge.
1944
K-25 Plant
Leads major engineering work for gaseous-diffusion enrichment.
Role range: 1944-1945
1945
K-25 Production Begins
K-25 begins production of enriched uranium using gaseous diffusion.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.