(We wore out several pairs of gloves in the process.) We used mercury to actually extract the gold from the powdered rock. Gold, like most minerals, can be 'dissolved' in mercury to create what's ...

The Romans used slaves for the hard manual labour of extracting the gold deposits and it is thought that serious excavation ...

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 ...