Five of the world’s leading container port operators have jointly undertaken a week - long initiative to promote sustainable resource usage in their respective port and facility networks, DP World said in its press release. During the fifth annual Go Green Initiative, 8,332 employees of DP World, Hutchison Ports, PSA International, Port of Rotterdam and Shanghai International Port Group collected a total of 1,966 kg of aluminium cans and 2,227 mobile phones for recycling. The choice of two very different waste products for collection and recycling was intentional. Aluminium cans are one of the most recyclable waste items, while mobile phones are e - waste that contain many valuable resources as well as toxic components that can negatively impact both human health and the environment if improperly disposed of. The purpose was to reinforce a simple message among participating employees – that of the need to think twice about th e consequences of discarding waste.