title: Mercury from gold mines accumulates far downstream.
mesh_terms: D000818:Animals; D004784:Environmental Monitoring / Q000706:statistics & numerical data; D004785:Environmental Pollutants / Q000032:analysis*; D005399:Fishes / Q000378:metabolism*; D020387:Food Chain; D019015:Geologic Sediments / Q000737:chemistry*; D006046:Gold; D008628:Mercury / Q000032:analysis*; D008906:Mining / Q000379:methods*; D010568:Peru; D045483:Rivers / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D006046:Gold; D008628:Mercury