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The article presents the original data on the total Hg concentration in the waste of enterprises for the extraction of iron ore, coal and marble located in the Republic of Khakassia. Hg concentrations in the rocks of the dumps and the material of the tailings depend on the electrical conductivity and magnetic susceptibility. The concentration of this element increases in more acidic environmental conditions, and its higher concentrations are associated with particles having a size of 0.04 mm. Geoecological indicators demonstrate the enrichment of Hg waste from all enterprises studied, as confirmed by the calculation data of the enrichment factor.