Mojiang mineshaft study (Ge et al. 2016)http://web.archive.org/web/20210617132453if_/http:/kjc.hncu.edu.cn/__local/9/FB/10/8FEFAABC43B7573F3215A424345_F6493F4D_1763B4.pdf
COVID-19 first appeared in Chinese miners in 2012: scientistshttps://nypost.com/2020/08/15/covid-19-first-appeared-in-chinese-miners-in-2012-scientists/
Image of documenthttps://twitter.com/JollyKJo/status/1404854819777482752/photo/1
The Latest Theory That May Answer the Origin of Covid-19 | by Shin Jie Yong | Aug, 2020 | Mediumhttps://medium.com/@shinjieyong/the-latest-theory-that-may-answer-the-origin-of-covid-19-d9efbe7072ae