New research has found that some tropical trees in the Peruvian Amazon can be used to monitor mercury pollution from gold mining ... trees don’t create growth rings, which can be counted ...

Furthermore, through the Acid Parting method, silver is separated from silver-gold alloy using nitric acid, while the residual substances undergo washing, drying, and tempering to extract gold. At the ...

The Delhi Police have arrested four individuals posing as head priests from the Haridwar Akhara for allegedly cheating a man out of his gold ring under the pretext of bringing him good fortune.