Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

(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 ...

Quicksilver, also known as mercury, has long been used in the process of gold extraction. Its unique ability to bond with gold has made it a useful tool in mining, but this ancient practice comes ...

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 ...

Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable for this digitized archive article. Subscribers may view the ...