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Geotechnical Properties of Zinc/Lead Mine Tailings from Tara Mines, Ireland
This paper presents the geotechnical properties of the zinc/lead mine tailings from Tara Mines in County Meath, Ireland. The coarser and finer materials from the mechanical crushing and grinding processes were classified as slightly sandy silt and clayey silt, with high specific gravity of solids values of 2.78 and 2.82, and bulk density values of 2.01 and 2.08 tonne/m3, respectively. Chemical analysis indicated that the tailings comprised high proportions of calcium and magnesium (derived from the limestone ore body), with high residual concentrations of zinc and lead. The materials in the tailings pond were in a loose to medium dense state, with low to very low hydraulic conductivity of the order of 10–6-10–8m/s, and values of effective angle of shearing resistance of 37° (coarse) and 32° (fine). An indicative inert capping layer is presented that will form part of the rehabilitation works towards reintegrating the tailings pond into the surrounding landscape when its storage capacity is reached.
Geotechnical Properties of Zinc/Lead Mine Tailings from Tara Mines, Ireland
This paper presents the geotechnical properties of the zinc/lead mine tailings from Tara Mines in County Meath, Ireland. The coarser and finer materials from the mechanical crushing and grinding processes were classified as slightly sandy silt and clayey silt, with high specific gravity of solids values of 2.78 and 2.82, and bulk density values of 2.01 and 2.08 tonne/m3, respectively. Chemical analysis indicated that the tailings comprised high proportions of calcium and magnesium (derived from the limestone ore body), with high residual concentrations of zinc and lead. The materials in the tailings pond were in a loose to medium dense state, with low to very low hydraulic conductivity of the order of 10–6-10–8m/s, and values of effective angle of shearing resistance of 37° (coarse) and 32° (fine). An indicative inert capping layer is presented that will form part of the rehabilitation works towards reintegrating the tailings pond into the surrounding landscape when its storage capacity is reached.
Geotechnical Properties of Zinc/Lead Mine Tailings from Tara Mines, Ireland
Quille, Michael E. (author) / O'Kelly, Brendan C. (author)
GeoShanghai International Conference 2010 ; 2010 ; Shanghai, China
2010-05-14
Conference paper
Electronic Resource
English
Geotechnical Properties of Zinc/Lead Mine Tailings from Tara Mines, Ireland
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