Freeport, New York — At eWorks in Freeport, New York, piles of dusty televisions, personal computers, printers and other old tech are the start of an electronic treasure hunt. "There is a value that ...

Refractory gold ores present significant challenges to conventional extraction methods. In these ores, gold is tightly encapsulated within sulphide minerals or locked by carbonaceous matter, thereby ...

In the Philippines, as in many places across the globe, mercury has long been central to how small-scale gold miners earn their living. Used as an easy way to separate gold from other minerals they ...