Operation HAT - How the CIA lost a nuclear spying device in the Himalayas (Nanda Devi Incident)

To spy on China's missile tests, the US and India carried a nuclear-powered listening device to the summit of Nanda Devi. Or so was the plan, as they soon had to realize how difficult this would actually be.
Sources and Attributions:
https://github.com/theohosignal/TempSources/blob/master/04_Operation_HAT%20

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