Based on government statistics and satellite images, researchers estimated that approximately 3,500 lung cancer cases in China between 1982 and 2015 could be tied to emissions from beehive coke ovens (BCOs), which were banned in 1996; the number of cancer cases tied to BCO emissions is estimated to be more than 9,000 without the ban, but only 1,500 if the ban had been fully implemented immediately after taking effect, according to the authors.
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Article #17-14389: "Health effects of banning beehive coke ovens and implementation of the ban in China," by Yang Xu et al.
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Proceedings of the National Academy of Sciences