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United Nations Environment Programme ,  [Aspectos Ambientales en Mineria de Metales No Ferrosos (Cu, Ni, Pb, Zn, Au) - Inforne Tecnico No. 5] ,  Aspectos Ambientales en Mineria de Metales No Ferrosos (Cu, Ni, Pb, Zn, Au) - Inforne Tecnico No. 5

United Nations Environment Programme ,  [Environmental and Safety Incidents concerning Tailings Dams at Mines: Results of a Survey for the Years 1980-1996] ,  Environmental and Safety Incidents concerning Tailings Dams at Mines: Results of a Survey for the Years 1980-1996

United Nations Environment Programme ,  [Squeezing Gold from a Stone: How to Reduce Toxic Health Risks and Pollution Caused by Mercury Use in the Small-Scale & Artisanal Gold Mining Sector] ,  Squeezing Gold from a Stone: How to Reduce Toxic Health Risks and Pollution Caused by Mercury Use in the Small-Scale & Artisanal Gold Mining Sector