GOLD RECOVERY: Machine captures "green" gold
- Wednesday, May 5, 2010, 23:36
- Gold
- 26 views
PERU – In an attempt to eliminate the use of mercury by artisanal gold miners, a Peruvian engineer has patented a small, cheap to operate, cylindrical machine. According to reports, gold-bearing slurry and biodegradable chemicals are fed into the
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GOLD RECOVERY: Machine captures "green" gold
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