On April 27, 2022, a group of students and teachers from the Higher Technical School of Agricultural Engineers and Forestry of Albacete, University of Castilla la Mancha, visited us. During the visit we discussed the problem of the abandoned mining tailings and showed the students and teachers (Dr. Pablo Ferrandis and Dr. Daniel Moya, Department of Plant Production and Agrarian Technology) the preparation, soil improvement and planting techniques applied in the project.