Painfully manual and inefficient processing to get gold out of computer circuit boards. It looks like they are adding sheets of lead, probably to bind non-gold materials. I am pretty sure that making aqua regia (hydrochloric and nitric acids) which dissolves gold. I do not want to see the livers of these Indians or Pakistanis doing this awful work. The only advanced technology I see is a 5L Pyrex beaker.
Only wealthy nations can afford occupational health and safety, or environmental protections.
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