3.4.2Dismantling The next step is the removal of some functioning or valuable components such as copper cables, memories, drives, batteries, capacitors and so on for re-use. The non-functioning components are dismantled and sorted according to their main functions while the hazardous substances are removed and are either stored or treated safely [15][16]. This step is sometimes called enrichment because critical materials are removed to avoid dilution or contamination with toxic substances. [12] Two methods are employed here; one is mechanical shredding and sorting, while the other is manual dismantling and sorting.[15] Simple tools are used in the second method and thus they can be carried out by unskilled workers. This method is preferable in the developing countries with lower wages. Mechanical shredding method is economically preferred in the developing countries. [12][18]