International audience Mineralogical and geochemical analyses of the environmental components in the vicinity of the abandoned mines of Jebel Hallouf-Sidi Bouaouane have shown that large volumes of flotation tailings are made of base metal sufides (galena, sphalerite, pyrite, marcasite) accompanied with lesser amounts of sulfosalts (jordanite, tennantite) and associated to a carbonated (calcite) and clayey (kaolinite, illite) matrix. Strong heavy metals (Pb, Zn and Cd) concentrations are recorded in soil and flotation tailings. Their concentrations in the flotation tailings are around 9250 mg.kg-1, 8200 mg.kg-1 and 66.5 mg.kg -1, respectively. Their mean concentrations in the soils surrounding the aforementioned mine wastes, are 39,720 mg.kg-1, 9030 mg.kg-1 and 86 mg.kg-1, respectively. Erosion by wind and running waters (heavy rain and flood periods) are considered as important mechanism in carrying these toxic elements to flood areas, and especially to soils lying on the eastern side of Jebel Hallouf Mountain. The statistical analyses of geochemical data relative to mine wastes and soils display a relationship between heavy metals and clay. Another relation is established between these metals and iron oxides. In soil, the µltivariate statistical approach [principal component analysis (PCA)] has shown two contamination origins: the mining wastes and rock dumps (F1xF2 diagram). Heavy metals concentrations in batch solutions of the contaminated soil samples varied between 36.6 µ g.l-1 and 51.2 51.2 µ g.l-1 for Pb, 543 µ g.l-1 and 3600 µ g.l-1 for Zn and 0.2 µ g.l-1 and 2.5 µ g.l-1 for Cd, while for the flotation tailings the concentrations varied between 16.9 µ g.l-1 and 483 µ g.l-1, 63 µ g.l-1 and 3240 µ g.l-1, and 2 µ g.l-1 and 9.8 µ g.l-1 for the same elements respectively. Concentrations of the same order are measured in meteoric water samples taken at the top of the flotation tailing piles essentially for Zn (145 µ g.l-1 to 1933 µ g.l-1) and Cd (4.6 1.µ g1-1 to 34.6 µ g.l-1). These results express the high mobility of heavy metals as to exceed the environmental norms especially for Pb in the contaminated soils as well as Pb and Cd in the flotation tailings leaching solutions