History: 1911: Chester McDuffee and his ADS diving suit, aluminum alloy weighing 485 lbs/200 kg [800x1124]

https://i.redd.it/w5tftn4rae821.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/achhjn/1911_chester_mcduffee_and_his_ads_diving_suit/?utm_source=ifttt