1.   The mercury is dumped into the rivers of the region by miners who use it to extract gold from silt.

2.   Anglogold comprises Freegold, Vaal Reefs, Western Deep Levels, Elandsrand, and Ergo, which extracts gold from processing waste ore.

3.   Carbon-in-leach is a method for extracting gold from ore of medium grade.

4.   Environmentalists are livid because the mine operators plan to use a cyanide solution to extract gold from Buckhorn Mountain.

5.   From there, IPM shipped the samples to AuRic Metallurgical Laboratories in Salt Lake City, which extracted the gold.

6.   Friday the Australian gold producer said there is not an economic way to extract gold from its Mount Olympus prospect.

7.   Heap leaching is a low-cost method of extracting gold from low-grade ores.

8.   Illegal miners are poisoning water with the mercury they use to extract gold from the riverbed.

9.   It was credited with medicinal powers, and alchemists supposedly tried to extract gold from it.

10.   The rocks containing gold veins would then be soaked in vats containing cyanide, which is used to extract the gold.