The South African Nuclear Energy Corporation's (Necsa) facility at Pelindaba houses the Safari-1 reactor that is the largest reactor of its kind in Africa and is used to make the medical isotopes.
The facility produces molybdenum-99, used for medical diagnostics and "dopes" about 20 tons of silicon with phosphorous - to improve its conductivity - every year. Pelindaba also offers a range of analytical services to mines, international laboratories and private companies.
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Find out more about Necsa, its Pelindaba facility and its work.