New Delhi, May 12 -- The Delhi government on Monday announced that all construction and demolition (C&D) sites across the city are required to have green nets installed with a minimum thickness of 100 gram per square metre (GSM). The directions, issued by the Delhi Pollution Control Committee (DPCC), also mandate high-intensity dust screens at construction sites with immediate effect. Green nets are set up at construction sites primarily to contain debris, reduce dust pollution and protect workers and pedestrians from falling materials. Officials said that with no threshold on the thickness currently, existing nets are found to be ineffective in controlling dust, as they allow the dust to largely flow on to the roads. Delhi environment mini...