Processing PCBs includes several steps of crushing and separation until a non-metallic fraction to test by bioleaching technology is obtained. Next figure shows the three steps of the global process where the material has to pass until the final fraction is achieved: Material through each step of the process. 1st STEP: The process begins with the crushing of the material in a shredder. 2nd STEP: The material is introduced in the mill during continuous cycles. 3rd STEP: The aim of this step is to separate the metallic fraction from the non-metallic one. MATERIAL FOR BIOLEACHING: The non-metallic fraction obtained in the previous step is the one selected to be used in the bioleaching process that will be carried out by BIOTAWEE consortium.