Dozens of people crowded around an automated gold recycling machine at a Shanghai mall, hoping to melt down family heirlooms ...

TANAKA Precious Metals is one of only five companies in the world to be appointed as a Good Delivery Referee by the London Bullion Market Association, the registration and accreditation organization ...

Chalmers University researchers develop a sustainable method for gold recycling using biodiesel. The method effectively extracts pure gold from mixed metals and is applicable to other socially ...

Researchers have developed an environmentally friendly method for recycling and purifying metals. Using gold earrings from a pawnshop in Gothenburg and biodiesel from the nearest filling station, the ...

A man in southern China has drawn attention after demonstrating how he extracted 191.73 grams of gold worth over 210,000 yuan (US$30,222) from discarded SIM cards and other electronic waste.