The University of Johannesburg (UJ) in South Africa, in collaboration with Kingsoft University and Batemann Engineering, has successfully developed the Mineral Positron Emission Tomography (Mineral PET) for the identification of diamonds in diamond ore. This technology draws on medical positron scanning technology. Professor Simon Cornell, head of the development project, said: "We have been able to use nuclear and particle technology to obtain images of diamonds in diamond-containing rocks." Diamonds are made of carbon, but different coals or graphite have different carbon atoms. This machine can distinguish between diamonds and materials other than diamonds. At the famous Kimberley diamond mine in South Africa, technicians cut ore into ore blocks about 10 meters in diameter and scanned them with a tomograph developed to determine if they contained diamonds. The application of this technology has many advantages, mainly three: one is to greatly reduce the mining cost of diamonds; the second is to benefit the environment; the third is conducive to the exploitation and protection of large diamonds. According to Professor Cornell, the product has been patented and is now being tried for commercial development.
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