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High concentrations of heavy metal[loid]s in soils, spoils, vegetation and waters in the proximity of former metalliferous mining areas may pose a risk to the environment if dispersed. Several amendments were compared for their abilities to reduce the phyto-toxicity of a contaminated mine spoil (≤10,000mgkg−1 As, Bi, Cd, Cu, Hg, Pb and Zn). Iron and phosphorus based amendments or compost were mixed...
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