Photo: Denver Public Library Discovery News reports: The sediment was then run through “sluice boxes,” where mercury was added to bind to gold. But large quantities of the heavy metal made ...

The sediment was then run through "sluice boxes," where mercury was added to bind to gold. But large quantities of the heavy metal made their way into sediment downstream. This destructive mining ...

Liquid mercury has long been used in gold mining ... From the savings, women can [upgrade] their sluice boxes, can get their [sluice box] rugs... This group allows women to create their own ...