In 1852, physician Victor Burq visited a copper smelter in Paris's 3rd arrondissement, where they used heat and chemicals to extract the reddish-brown metal. It was a dirty and dangerous job. Burq found the facility to be "in poor condition," along with the housing and the hygiene of the smelters. Normally, their mortality rates were "pitiful," he observed.
Read more: https://www.vice.com/en_us/article/xgqkyw/copper-destroys-viruses-and-bacteria-why-isnt-it-everywhere?utm_source=pocket-newtab?source=Snapzu
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