 owned by thirteen countries which shared and widely published technologies developed. The plant, located in Dessel, Belgium, operated from 1966 to 1974.
 (Semi)industrial plants are used to demonstrate that the process is working properly to produce enriched uranium before proceeding with a full scale expensive investment. At this stage one can still do adjustments to the process. In chemical the industry, this is often called to a pilot plant. (Semi)industrial plants have customarily about 1000 centrifuges when the full size enrichment plants can have tens of thousands of centrifuges.
 S. Hecker, Redefining Denuclearization in North Korea, The Bulletin of Atomic Scientists, December 20, 2010.
 North Korean engineers indicated to Dr. Hecker that the capacity of the centrifuges they had built was 4 kgSWU/year.(Separative Work Unit, SWU, is a measure of work expended during enrichment process). The performance of the North Korean centrifuge appears to be lower than 5 kgSWU/year which is often attributed to the Pakistani P-2 centrifuge.