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When an electronic device breaks or becomes obsolete ... The traditional methods of gold extraction—using harsh chemicals such as cyanide or mercury—are not only costly but also environmentally ...
The material can reportedly transform the way gold is extracted from electronic wastes, which has been described so far as a ...
Easier and cheaper extraction of gold from old tech could boost the financial incentive to safely recycle, and keep toxic ...
Those who have had experience in gold digging have represented to us that miners have found great difficulties for the want of some process, by machinery or otherwise, in extracting the gold from ...
Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable for this digitized archive article. Subscribers may view the ...