A sorting unit that detects only certain radio-active elements has been demonstrated at Boksburg in the Transvaal. So, 57 years ago, started a story in Electronics Weekly’s edition of March 15th 1961. The story goes: The equipment is called the K and H Radiometric Electronic Sorting Unit and it was designed in Canada. Since there is ...
This story continues at Finding Gold By Radio-Activity
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from Electronics Weekly https://www.electronicsweekly.com/blogs/mannerisms/memory-lane/finding-gold-radio-activity-2018-10/
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