The containment of toxic wastes: I. Long term metal movement in soils over a covered metalliferous waste heap at Parc lead-zinc mine, North Wales

anthropogenic soils desechos gales heavy metals metal metales metales pesados metals mine spoil mouvement movement movimiento pays de galles procesos de transporte en el suelo reclamation reino unido soil transport processes substance toxique suelos antropogenicos toxic substances transport dans le sol united kingdom wales wastes