Chen Youlin specialises in using seismological data to track nuclear tests and has worked on US-funded projects.
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US seismologist who studied North Korean nukes detained in China, wife fights ‘unjust’ charges
An American seismologist who spent his career studying North Korean nuclear tests has been locked up in China for years and ...
The relatives of Youlin Chen of Boston broke their silence this week, apparently after they saw no sign from the Chinese ...
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