CANMET Environment Laboratory http://envirolab.nrcan.gc.ca/
Canadian government institution that addresses the environmental concerns of the minerals and mining industries, including effluent processing, safe disposal of waste materials, and decommissioning of closed plants and mines.
Mercury Network - Hg-Net http://www.hruschka.com/hg-net
Internet expert forum on the effects and environmental impacts of mercury use and abuse, with special emphasis on small-scale gold mining. [English and Spanish]
USGS Abandoned Mine Lands Initiative http://amli.usgs.gov/amli/
Detailed plans, pictures, data and reports of the USGS initiative to remediate the contamination left at abandoned mine sites at the Boulder River basin in southwestern Montana and the Upper Animas River basin in southwestern Colorado.