Delhi Environment Minister Gopal Rai on Tuesday directed the Delhi Pollution Control Committee (DPCC) to issue a notice to the central government-owned construction company NBCC India for allegedly violating dust control norms at a project site here.

As part of the Delhi government`s anti-dust campaign, Rai inspected the NBCC construction site near the Karkardooma Metro Station on Tuesday and found that construction waste was being dumped in the open and anti-smog guns were not operating.